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Permutation Coefficient Assignment

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Added on: 2023-02-22 06:22:56
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Question Task Id: 0

You are given two numbers ‘N’ and ‘K’. Your task is to find P(N, K). P(N, K) is the permutation coefficient given as P(N, K) = N! / (N - K)! where X! Is the product of first X natural number. Since this value may be large only find it modulo 10^9 + 7.

Input Format:

The first line of input contains an integer ‘T’ denoting the number of test cases. The next ‘T’ lines represent the ‘T’ test cases. The first and only line of each test case contains two integers ‘N’ and ‘K’.

Output Format:

For each test case, print a single line containing a single integer denoting the answer for that test case modulo 10^9 + 7. Print the output of each test case in a separate line.

Note:

You do not need to print anything, it has already been taken care of. Just implement the given function.

Constraints:

1 <= ’T’ <= 50 1 <= ’N’ <= 10000 0 <= ’K’ <= ’N’ Time Limit: 1 sec

  • Uploaded By : Katthy Wills
  • Posted on : February 22nd, 2023
  • Downloads : 0
  • Views : 306

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