Answer:
#here is code in Python
#read the value of n
n=int(input("enter a number:"))
#print all the odd numbers
for i in range (1,n+1,2):
print(i,end = '')
Explanation:
Read a number from user and assign it to variable "n".Then use a for loop to print all the odd numbers from 1 to n.We can use range() function to print this. here first number is starting of the range and second will be the end of the range. and 3rd one is the Increment to the iterator.
For example In the above code, 1 is the start point and n+1 will be the last. Here
loop will run till n only.Every time value of "i" is increased by 2.
Output:
enter a number:15
1 3 5 7 9 11 13 15
. What year did the USA host World Cup? Right answer 1994
Answer:
USA host World Cup in 1994 1994 FIFA World Cup
Explanation:
USA host World Cup in 1994 FIFA World Cup
it was the 15th edition of FIFA World Cup
and Brazil was won the tournament
Brazil beat Italy by 3–2 in penalty shoot-out
it was play between 17 June to 17 July and 24 team play this World Cup
and there matches played = 52
and 9 cities host this game
United States of America was chosen as the host by FIFA on the 4 July, 1988
What is an E-R diagram?
Answer:
The E-R diagram is basically used in the designing and debugging the relational database in the field of the information system and software engineering.
In the E-R diagram, entity is the object and the component of the data that is used to represent as rectangle.
This E-R diagram is basically used to control the conjunction in the DFD (Data flow diagram). Entities, attribute and action are the three main components that are used in the E-R diagram.
Explain the SCAN disk scheduling algorithm. Explain why it is sometimes called the Elevator Algorithm.
Answer:
SCAN disk scheduling is the algorithm in which a certain arm of disk rotates in particular direction and serves the requests that arrive from that path. It scans the cylinder's disk in both back and forth direction.
If the arm reaches the bottom of the disk , it automatically stars working in the opposite direction and serves the request in the reverse direction path.As this functioning is similar to the elevator movement ,it is also known as elevator algorithm.
Which of the following statements about a stack is correct?
A stack pointer holds the address of the next free location in the stack at any given time.
A stack grows downward from high memory to low memory.
A stack is a set of memory locations reserved for storing information temporarily during the execution of programs.
All of the above
None of the above
Answer:
All of the above.
Explanation:
All the information provided in the question about stack is correct.
A stack pointer(SP) is a register to hold the address of the next free location that is present in the stack at any given time.
The growth of the stack is downwards it goes form high memory to low memory.The first address pushed be stored on the higher memory location in the stack and the next address will be stored at lower memory location.
A stack stored the temporarily for the duration of the execution of the program.
A bowl contains 20 candies; 15 are chocolate and 5 are vanilla. You select 5 at random. What is the probability that all 5 are chocolate?
Answer: 0.1937
Explanation:
Given : A bowl contains 20 candies; 15 are chocolate and 5 are vanilla.
If we select 5 candies, then the number of ways to select them is given by permutations.
The number of ways to select 5 candies is given by :-
[tex]^{15}P_5=\dfrac{15!}{(15-5)!}=\dfrac{15\times14\times13\times12\times11\times10!}{10!}=360360[/tex]
The number of ways of selecting any 5 candies out of 20:-
[tex]^{20}P_5=\dfrac{20!}{(20-5)!}\\\\=\dfrac{20\times19\times18\times17\times16\times15!}{15!}\\\\=1860480[/tex]
Now, the probability that all 5 are chocolate :-
[tex]=\dfrac{360360}{1860480}=0.193691950464\approx0.1937[/tex]
Hence, the probability that all 5 are chocolate =0.1937
Answer:
A bowl contains 20 candies; 15 are chocolate and 5 are vanilla.
If we select 5 candies, then the number of ways to select them is given by permutations.
The number of ways to select 5 candies is given by :-
^{15}P_5=\dfrac{15!}{(15-5)!}=\dfrac{15\times14\times13\times12\times11\times10!}{10!}=360360
15
P
5
=
(15−5)!
15!
=
10!
15×14×13×12×11×10!
=360360
The number of ways of selecting any 5 candies out of 20:-
\begin{lgathered}^{20}P_5=\dfrac{20!}{(20-5)!}\\\\=\dfrac{20\times19\times18\times17\times16\times15!}{15!}\\\\=1860480\end{lgathered}
20
P
5
=
(20−5)!
20!
=
15!
20×19×18×17×16×15!
=1860480
Now, the probability that all 5 are chocolate :-
=\dfrac{360360}{1860480}=0.193691950464\approx0.1937=
1860480
360360
=0.193691950464≈0.1937
Hence, the probability that all 5 are chocolate
Write a program that reads a string from the keyboard and tests whether it contains a valid date. Display the date and a message that indicates whether it is valid. If it is not valid, also display a message explaining why it is not valid. The input date will have the format mm/dd/yyyy. A valid month value mm must be from 1 to 12 (January is 1). The day value dd must be from 1 to a value that is appropriate for the given month. September, April, June, and November each have 30 days. February has 28 days except for leap years when it has 29. The remaining months all have 31 days each. A leap year is any year that is divisible by 4 but not divisible by 100 unless it is also divisible by 400.
Answer:
// here is code in java.
import java.util.*;
// class definition
public class Main {
// main method of the class
public static void main(String[] args) throws Exception {
// Scanner object to read date
Scanner in = new Scanner(System.in);
System.out.print("Enter a date in format mm/dd/yyyy to check:");
// read the date from user
String inp_date = in .next();
// split the date with "/" delimeter
String[] ip = inp_date.split("/");
// find month from date
int inp_month = Integer.parseInt(ip[0]);
// find day from date
int inp_day = Integer.parseInt(ip[1]);
// find year from date
int inp_year = Integer.parseInt(ip[2]);
// boolean variable
boolean flag = true;
// print the input date
System.out.println("Your Entered date was: " + inp_date);
// check month is valid or not
if (inp_month < 1 || inp_month > 12)
{
System.out.println("Entered Date is invalid:");
System.out.println("The input month is not from 1 - 12.");
flag = false;
}
//check day is valid or not
else if (inp_day < 1) {
System.out.println("Entered Date is invalid:");
System.out.println("The value of day is less than 1.");
flag = false;
}
// check days in those month which has 30 days
else if ((inp_month == 4 || inp_month == 6 || inp_month == 9 || inp_month == 11) && inp_day > 30) {
System.out.println("Entered Date is invalid::");
System.out.println("This month have only 30 days, but Entered day is greater than 30.");
flag = false;
}
// if month is February then check leap year and days
else if (inp_month == 2 && ((inp_year % 4 == 0) && (inp_year % 100 != 0))) {
if (inp_day > 29) {
System.out.println("Entered Date is invalid::");
System.out.println("In a leap year, only 29 days in February.");
flag = false;
}
}
// if month is February and year is non-leap
else if (inp_month == 2 && inp_day > 28) {
System.out.println("Entered Date is invalid:");
System.out.println("In a non-leap year, only 28 days in February.");
flag = false;
}
// if all are valid
if (flag)
System.out.println("Entered Date is valid:");
}
}
Explanation:
Read the date from user in mm/dd/yyyy format with the help of Scanner object. Extract day, month and year from the date. Then check whether month is between 1-12 or not and print appropriate message. After that check day is less than 1 or not, if not then print reason. Check the days in those month which has 30 days in it.If month is February then check for leap year and day is greater than 29 then print reason. Else if month is February and year is non-leap then check days whether it is greater than 28 or not. In last If value of flag is true then print date is valid.
Output:
Enter a date in format mm/dd/yyyy to check:2/30/2012
Your Entered date was: 2/30/2012
Entered Date is invalid::
In a leap year, only 29 days in February.
Complete the following conversions. You MUST show all of your work to receive full credit.
Convert the following Hex numbers to decimal.
a. FFFF
b. 0123
c. 005F
d. 026A
e. 73B0
Answer:
Following are the decimal num
a. FFFF=65535
b. 0123=291
c. 005F=95
d. 026A=618
e. 73B0=29616
Explanation:
Conversion of hexa decimal number to decimal number is done by multiplying the digit with corresponding power of 16.
FFFF= 15 x 16³+15 x 16² + 15 x 16¹+ 15 x 16⁰.
=61440+3840+240+15
=65535
0123=0 x 16³+1 x 16²+2 x 16¹+3 x 16⁰
=0+256+32+3
=291
005F=0 x 16³+0 x 16²+5 x 16¹+F x 16⁰
=0+0+80+15
=95
026A=0 x 16³+2 x 16²+6 x 16¹+A x 16⁰
=0+512+96+10
=618
73B0=7 x 16³+3 x 16²+B x 16¹+0 x 16⁰
=28672+768+176+0
=29616
An instance of an abstract class can be created using _____. (Points : 2) the new operator
encapsulation
a public accessor
None of the above
Answer:
The correct answer for the given question is the new operator.
Explanation:
An abstract class is those which have the only declaration of the abstract method, not a definition. Any class which inherits abstract class must define all the method of abstract otherwise it also be abstract.
To declared any abstract class following syntax is used
abstract class class name
{
// abstract method
}
To create an instance of an abstract class we can use a new keyword. The new keyword created the instance of an abstract class.
encapsulation is the feature of object-oriented we cannot create an object by using encapsulation so this option is wrong.
The public is an access modifier we cannot create an object by using public keyword so this option is also wrong.
Therefore the correct answer is new.
Create a program that will calculate the weekly average tax withholding for a customer, given the following weekly income guidelines: Income less than $500: tax rate 10% Incomes greater than/equal to $500 and less than $1500: tax rate 15% Incomes greater than/equal to $1500 and less than $2500: tax rate 20% Incomes greater than/equal to $2500: tax rate 30% Store the income brackets and rates in a dictionary. Write a statement that prompts the user for an income and then looks up the tax rate from the dictionary and prints the income, tax rate, and tax.
Answer:
#here is code in python
# create a dictionary of tax rate based on the income
tax = {499 : '10%', 1499 : '15%', 2499 : '20%', 2500 : '30%'}
#read the weekly income from user
week_income = int(input("Enter income: "))
#if weekly income is less than 500
if(week_income<500):
print("Income is : ",week_income)
print("Tax rate is : ",tax[499])
print("Tax on income is : ",week_income*0.1)
# if income is greater or equal 500 and less than 1500
elif(week_income<1500):
print("Income is : ",week_income)
print("Tax rate is : ",tax[1499])
print("Tax on income is : ",week_income*0.15)
# if income is greater or equal 1500 and less than 1500
elif(week_income<2500):
print("Income is : ",week_income)
print("Tax rate is : ",tax[2499])
print("Tax on income is : ",week_income*0.20)
# if income is greater 2500
else:
print("Income is : ",week_income)
print("Tax rate is : ",tax[2500])
print("Tax on income is : ",week_income*0.30)
Explanation:
Create a dictionary, in which tax are stored as per the weekly income.For income less than 500 tax will be 10%,for greater or equal 500 and less than 1500 tax will be 15%, for greater or equal 1500 and less than 2500 tax will be 20% and greater than 2500 tax will be 30% . Read the weekly income from user and then display the income, tax rate and tax on income according to the weekly Income.
Output:
Enter income :1200
Income is : 1200
Tax rate is : 15%
Tax on income is : 180.0
Using Karnaugh maps, simplify the following Boolean function:
F(a,b,c,d) = a' b' c' + b' c d' + a' b c d' + a b' c'
Answer:
F(a,b,c,d)=b'c' + a'cd' + ab'd'.
Explanation:
The image of the corresponding k-map is attached to this answer please refer it.By the sop given in the question the k-map is formed.There are 3 groups formed 1 group of four 1's and 2 groups of 2 1's.Hence there are three sop and the sop is reduced from the previous SOP.
Twitter, Foursquare, and other real-time media add to or leverage capabilities of smartphones--improving your ability to be well-informed in real-time.
a. True
b. False
Answer: True
Explanation: Twitter is the application that functions online for providing news and communication for connecting people on social network.Foursquare is also an online app that works on the social platform in the smartphones and provide the knowledge about activity of people moving through the real-time world.
Other real world apps that operate in the real time helps in providing information about the activities and incidents happening through the smartphones.This also increases the knowledge of the individual by discovering, reading,sharing of the information.Thus the statement given is true.
A chart that shows the resource (project team member) along with their allocated hours for each week is known as a(n):
Select one:
a. Project staffing chart
b. GANTT chart
c. Histogram
d. Entity diagram
Answer: b) GNATT chart
Explanation: GNATT is the type of chart that displays the schedule or working in the form of bars in horizontal direction .The chart displays the duties /task performed on the vertical axis and the time periods on horizontal axis week-vise. This chart is usually used for project management purpose fr coordination, tracing, planning etc.
Other options are incorrect because project staffing chart is for the display of the staff activities involved during project, histogram is graph representation using bars of different heights and entity diagram displays the entities relation in databases..Thus , the correct option is option(b).
what are "open source" programming language? Give examples of open source languages. Discuss the pros and cons of open source language.
Answer:
The open source is the programming language that basically falls inside the parameters of the protocol of open-source convention. This fundamentally implies the language are not proprietary, with the specific arrangements (contingent upon the open source permit), can be adjusted and based upon in a way that is available to general society.
The python and ruby are the main examples of the open source programming language.
The disadvantage of the open source is that it is not much compatible as compared to all other software. It is not user friendly and easy for using the software.
The advantage of the open source programming is that it is available at low cost and it has high availability.
Which media access method is used by twisted-pair Ethernet networks? (Please select one of the four options)
CSMA/CD
Token passing
CSMA/CA
OFDMA
Answer: CSMA/CD
Explanation:
CSMA/CD (Carrier sense multiple access with collision detection) is the media access that is use by the twisted pair ethernet networks. The CDMA/CD is one of the protocol that is used by the various types of computer ethernet in the network.
The carrier sense multiple access is one of the part of MAC (media access protocol) protocol that is implemented by the multiple ethernet networking in the system.
Twisted-pair Ethernet networks use the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) media access method. This allows devices to detect if the network is free and manage collisions if they occur.
Explanation:The media access method used by twisted-pair Ethernet networks is CSMA/CD (Carrier Sense Multiple Access with Collision Detection). This method allows devices to sense whether the network is free before they send data. If two devices detect that the network is free and start sending data at the same time, a collision occurs. In this situation, the devices stop transmitting for a random length of time before attempting to send the data again.
Learn more about CSMA/CD here:https://brainly.com/question/32413257
#SPJ6
.Statements using the ___________ class are explicit conversions.
a.Explicit
b.Convert
c.ExplicitConvert
d.ConvertType
Answer: Explicit
Explanation:
The statement which used the explicit class are the explicit conversion, as it is type of the conversion which uses the conversion keyword. These type of the keywords act as a function in the explicit conversion and compiler generating the code in the given inline function.
Explicit conversion basically require the cast operator in its function when, the information is lost during explicit conversion.
Conversion of base class into the derives class is one of the typical example of the explicit conversion.
Discuss why Web services are important to Web development
Answer:
The web services is the software that uses over the internet and also used various standard XML message system.
The web services is basically used in various applications to make the platform and various types of the technologies independent.
The web services play very important role in the web development as, it allow various types of applications to share data and different types of services with each other in the system. It is used in various UNIX applications and java for the communication purpose.
What is the Matlab command to create a column vector with 11 equally spaced elements, whose first element is 2 and whose last is 32.
Answer:
transpose(linspace(2,32,11))
Explanation:
To get the equally spaced elements you can use:
linspace is the command for generating a linearly spaced vector.
For instance, the command:
linspace(element1,element2,n)
generates n points, between element1 and element2
The spacing between the points is calculated by
[tex]\frac{element2-element1}{n-1}[/tex]
In your case, the linspace command will create a vector with 1 row and 11 columns (1x11).
To get the column vector:
In order to convert this vector into one with 11 rows and 1 column (11x1), you can use:
tanspose(vector)
where vector is linspace(element1,element2,n)
List and describe four communication tools that are currently popular.
Answer: Communications tool that are currently popular are as follow:
a) Intranet:
Intranet is known as a private hub which can be accessed by an authorized individual within an organisation. It is predominately utilized in order to drive internal collaboration and communication.
b) Private Messaging :
Spaces that provide private messaging and also other functions are often perceived as great tool for business communication, in order to keep teams working together. It’s referred to as an effective type of communication mostly for employees and managers.
c) Discussion Forums :
A discussion forum can be referred to as something which brings together employees and management and thus allows for open discussion on several topics. Forums are effective in order to archive organisational knowledge that can be used by individuals as a reference.
d) Internal Blogs :
Internal blog is known as a place where an employee or an individual can share experiences and notion fast and also in an informal way.
What is the difference between a switch and a hub?
Explanation:
A hub is used to send the message from one port to other ports.It does not know the specific address of the destination where the message needs to send.it works on Physical layer of the OSI model(layer 1).
A switch can handle data and it knows the specific address of the destination.A switch works on the data link Layer of the OSI model(layer 2).
Define the keywords final and static.
Answer:
Final Keyword:-It is defined in the class that has the property of non-inheritance and can declare the constant variables. It has no re-initialization function.At the time of the final declaration,it is required that the variable should be initialized.
Static Keyword:-It is used in a particular class for defining it's member so that it can used for any object of the class.Static method in a class can call this keyword. It can has the property of being re-initialized.
An expression using the conditional operator is called a(n) __________ expression.
Answer: Conditional expression
Explanation: Conditional operators are those operators that are used between two values or variables for the given condition. This operator return an answer after evaluating the condition that can turns out to be true or false .
They also help in increment and decrement of the variable value by one according to condition.Conditional expression are those expression that use conditional operator in their statement for gaining a return value according to the condition being true or false.
What Will Social Media Look Like in the Future?
Final answer:
Social media in the future is likely to continue evolving and impacting how we interact with the world. It may integrate virtual reality and augmented reality technologies, utilize advanced algorithms and AI, and prioritize privacy and security.
Explanation:
Social media in the future is likely to continue evolving and impacting how we interact with the world. It will likely become more integrated into our daily lives, affecting various aspects such as communication, entertainment, and information dissemination.
One possibility is the increased use of virtual reality (VR) and augmented reality (AR) technologies in social media. Users might be able to experience virtual environments and interact with others in a more immersive way. Social media platforms could also utilize advanced algorithms and artificial intelligence (AI) to provide more personalized content and recommendations based on user preferences and behavior.
Additionally, social media may see advancements in privacy and security features to address concerns over data protection and online safety. New regulations could be implemented to ensure the responsible use of social media and protect users from harmful or misleading content.
A 40 fps(frames per second) video clip at 5 megapixels per frame would generate large amount of pixels equivalent to a speed of ____________megabps(megabits per second).
4800
200
600
Answer:
[tex]4800\dfrac{megabytes}{second}[/tex]
Explanation:
We have the next two data:
[tex]40\,\dfrac{frames}{second}[/tex]
[tex]5\,\dfrac{megapixels}{frame}[/tex]
Now we can find the number of megapixels per second.
[tex]40\dfrac{frames}{second}\cdot 5\dfrac{megapixels}{frame}=200\dfrac{megapixels}{second}[/tex]
Finally considering an RGB video we will have 3 channels each one with 8 bytes then we will have 24 bytes per each pixel then:
Write a C++ program to read N numbers. Find sum, product, and average of N numbers
Answer:
// here is code in c++
// headers
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
int n,num;
double sum=0, avg;
long long int prod=1;
cout<<"Enter value of N:";
// read value of N
cin>>n;
cout<<"enter "<<n<<" numbers:";
// read the N numbers
for(int x=0;x<n-1)
{
cin>> num;
// calculate sum of all
sum=sum+num;
calculate product of all
prod=prod*num;
}
// print sum
cout<<"sum of all "<<n<<" numbers is: "<<sum<<endl;
// print product
cout<<"product of all numbers is : "<<prod<<endl;
print average
cout<<"average of all "<<n<<" numbers is: "<<sum/n<<endl;
return 0;
}
Explanation:
Read the value of n from user.Then ask user to enter n numbers. Then calculate sum of all entered number and their product.After this calculate the average of entered number by dividing sum with n.Print sum, product and average of n numbers.
Output:
enter value of N:6
enter 6 numbers:1 2 3 4 5 6
sum of all 6 numbers is: 15
product of all numbers is : 120
average of all 6 numbers is: 2.5
Final answer:
The program starts by asking the user to specify the number of elements (N). The program demonstrates user input, loops, and basic arithmetic operations to achieve the desired output.
Explanation:
A sample C++ program that performs this task is :
#include. Write the C++ code that reads an integer from the user, and then computes that integer's absolute value.
Answer:
Following are the program in C++
#include <iostream>// header file
using namespace std;
int main() // main function
{
int num; // variable declarartion
cout<<" Enter the number:";
cin>>num; // user input
num=abs(num); // finding the absolute
cout<<num; // display number
return 0;
}
Output:
Enter the number:-90
90
Explanation:
In this program we have declared a variable "num" of type int. After that we find the absolute value by using abs function and finally display the variable "num".
What is the effect of block size in cache design?
Answer:
When designing a cache, you have to consider this things:
Delay. Miss rate. Area.If the cache has a bigger block size may have a lower delay, but when miss the miss rate will be costly. If an application has high spatial locality a bigger block size will do well, but programs with poor spatial locality will not because a miss rate will be high and seek time will be expensive.
Final answer:
The block size in cache design determines the amount of data stored in each cache block. It affects cache hit rate and wasted storage space. The optimal block size depends on various factors.
Explanation:
The block size in cache design refers to the amount of data that can be stored in each cache block. It plays a crucial role in determining the cache's performance and efficiency. A larger block size can lead to a lower cache miss rate and higher hit rate, as it allows for more data to be fetched from memory at once. However, a larger block size also results in more wasted storage space, known as internal fragmentation.
For example, let's consider a cache with a block size of 64 bytes. If the processor requests a single 4-byte integer, the cache will still load the entire 64-byte block into the cache. This leads to wasted space and can reduce the effective cache capacity. On the other hand, if the block size is too small, the cache may experience frequent cache misses, as it would need to load more blocks to fetch the required data.
Choosing the optimal block size involves balancing the trade-off between cache hit rate and wasted storage space. Factors like the access pattern of the application, cache associativity, and memory bandwidth also influence the effect of block size on cache performance.
Is 49 greater than y? Which below is correct?
A) 49 > y
B) 49 >= y
C) 49 < y
D)49 != y
Answer:
49>y
Explanation:
Given objective: Is 49 greater than y?
Among the options:
a) 49 > y => 49 is greater than y
b) 49 >= y => 49 greater than or equal to y
c) 49 <y => 49 is less than y or in other words, y is greater than 49.
d) 49 !=y => 49 is not equal to y.
So the requires solution is represented by (a) namely, 49>y . This can be alternatively read as y<49, that is y is less than 49. The other options do not represent the given requirement as illustrated earlier.
Why is exception handling an issue for testers in object-oriented developments?
Answer:
The exception handling occurs when the unexpected events are happened, which basically require special type of processing. The exception handling is the mechanism that mainly handle all type of the exception during the run time process in the system.
In the object oriented programming, the testers face issue during the development as it used for prevent the abnormal node in the program and also it customize the exceptional message in the system.
We basically used the try catch block in the exception handling as, it efficiently handle the difficult situation in the object oriented development.
While there are a lot of programming languages out there, one of the most widely used when it comes to web applications and web oriented products is Javascript. It differs from other 'standard' program languages in many ways. Using the Internet and/or your book as a resource, describe some of the differences between JavaScript and other programming languages like C++, C#, and Java?
Explanation:
The main differences between Javascript and other programming languages are as following :-
Javascript is a scripting language so it doesn't need to be compiled to get executed while other programming languages like C++,Java etc need to be compiled.Javascript is typed dynamically while other languages are static typed.Browsers can execute Javascript code on the other hand they can't execute Java,C++ etc.Do individuals have a privacy interest in their smartphones' locations?
Answer:
In today's world, everyone using smartphones as it easily allow to communicate by using different types of features like texting, video, e-mail and by using internet we can run various types of applications.
Smartphones carries one of the main and important skills that is show our current location. By using various types of applications like Global positioning system (GPS), cell ID and wifi we can easily trace the location.
But there is different types of option according to the individual requirement as some people want privacy as they are not interested to share their location to anyone.