Is This a Give Away

#1

You are given two integers l and r.
You have to choose k real numbers in the interval [l,r]

uniform randomly.
What is the expected count of distinct numbers chosen by you?
Input

The first line of the input contains a single integer T

denoting the number of test cases. The description of T
test cases follows.
The first and only line of each test case contains three space-separated integers l
, r and k

.

Output

For each test case, print a single line containing one integer - the expected count of distinct numbers chosen. It can be proved that the expected count is always an integer.
Constraints

1≤T≤105

1≤k≤100
1≤l≤r≤100

Example Input

3
3 6 4
1 3 1
6 7 2

Example Output

4
1
2

Explanation

Example case 2: You choose only 1
real number, so it doesn’t matter which real number you chose, number of distinct number is always 1. So expected count of distinct number is 1.

#2

Solution discription:
it’s simple .
if L and R are equal then output is 1
else the output will be K
Cpp solution for it is

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int tt;
  cin>>tt;
  while(tt--)
  {
    int l,r,k;
    cin>>l>>r>>k;
    if(l!=r){cout<<k<<endl;}
    else{cout<<"1"<<endl;}
  }
  return 0;
}

Ps: your doubts which you have posted haven’t been answered till now. You can reopen them so that i can help you to solve them :slight_smile: