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harina [27]
4 years ago
7

PLEASE HELP ON THESE 3!! ILL GIVE A BRAINLIEST IF ITS CORRECT!!

Computers and Technology
1 answer:
Travka [436]4 years ago
5 0
Not entirely sure about 1; I believe it's D. 2 is C, and 3 is A.
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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 c
Sindrei [870]

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 :-

^{15}P_5=\dfrac{15!}{(15-5)!}=\dfrac{15\times14\times13\times12\times11\times10!}{10!}=360360

The number of ways of selecting any 5 candies out of 20:-

^{20}P_5=\dfrac{20!}{(20-5)!}\\\\=\dfrac{20\times19\times18\times17\times16\times15!}{15!}\\\\=1860480

Now, the probability that all 5 are chocolate :-

=\dfrac{360360}{1860480}=0.193691950464\approx0.1937

Hence, the probability that all 5 are chocolate =0.1937

5 0
4 years ago
Read 2 more answers
Write a short program that uses a for loop to populate an array. The array can store up to 10 integers. Modify the code slightly
mr Goodwill [35]

Answer:

  1. public class num16 {
  2.    public static void main(String[] args) {
  3.        //This code is designed to create and populate an array with
  4.        //Ten Integer values
  5.        Scanner in = new Scanner(System.in);
  6.        //Create the array
  7.        int [] intArray = new int [10];
  8.        //populating the array
  9.        for(int i =0; i<=10; i++){
  10.            System.out.print("Enter the elements: ");
  11.            intArray[i]= in.nextInt();
  12.        }
  13.        //Print the Values in the array
  14.        System.out.println(Arrays.toString(intArray));
  15.    }
  16. }

Explanation:

  • The above code looks like it will run successfully and give desired output.
  • But a bug has been introduced on line 9. This will lead to an exception called ArrayIndexOutOfBoundsException.
  • The reason for this is since the array is of length 10, creating a for loop from 0-10 will amount to 11 values, and the attempt to access index 10 for the eleventh element will be illegal
  • One way to fix this bug is to change the for statement to start at 1.
8 0
3 years ago
....................................................
labwork [276]

Answer:

.........................................................

Explanation:

8 0
3 years ago
Which site was launched by Ben t Smith iv
Kryger [21]

He launched the site "Wanderful Media".

5 0
3 years ago
Provide instance fields for title, month, and year (for example, "Scientific American", "April", 2020). Each of these should be
miskamm [114]

Answer:

Check the explanation

Explanation:

Note : check attached image for output and program and also note that you're to replace "at" with shift 2 as the brainly text editor can't take the symbol

Program : **************Magzine.java**********************

/*

* To change this license header, choose License Headers in Project Properties.

* To change this template file, choose Tools | Templates

* and open the template in the editor.

*/

public class Magzine {

 

//class variable private can not access outside class

private String title;

private String month;

private int year;

 

//parameterized constructor

public Magzine(String title,String month,int year)

{

this.title=title;

this.month=month;

this.year=year;

}

 

//override toString method

"at"Override

public String toString()

{

String detail=title+" "+month+" "+Integer.toString(year);

return detail;//return string of class variable

}

 

//get Magzine objecte

 

public boolean equals(Magzine obj)

{

//commented returm statement compare string by address so you can uncomment if

//we do not use same string object of String class

//return this.month==obj.month && this.title==obj.title && this.year==obj.year;

//compare two object element if matches return true else false

return (this.month.equals(obj.month)) &&(this.title.equals(obj.title)) && this.year==obj.year;

}

   

}

Program : *************************Main.java****************************

/*

* To change this license header, choose License Headers in Project Properties.

* To change this template file, choose Tools | Templates

* and open the template in the editor.

*/

public class Main {

/**

* "at"param args the command line arguments

*/

public static void main(String[] args) {

// TODO code application logic here

Magzine Obj =new Magzine("Scientific American ", "April", 2020); //object of class

Magzine Obj1 =new Magzine("Scientific American ", "April", 2020);//Obj and obj1 is same content data

Magzine Obj2 =new Magzine("Scientific American", "June", 2020); //obj and obj1 same but obj2 different

 

System.out.println(Obj.toString()); //print string of obj

System.out.println(Obj1.toString());//print string of obj1

System.out.println(Obj2.toString());//print string of obj2

 

 

System.out.println(Obj.equals(Obj1)); //obj and obj1 equal and return true

System.out.println(Obj.equals(Obj2)); // obj and obj2 not equal so return false

 

 

}

 

}

Output can be seen below:

4 0
4 years ago
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