Compute nCr % p
Submissions: 471   Accuracy:

19.79%

  Difficulty: Easy   Marks: 2
     

Given 2 number n and r, compute nCr mod 109+7.

Input:

The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. The first line of each test case contains the integers n and r.

Output:

Output nCr mod 109+7 for each test case in a new line.


Constraints:

1<= T <=100

1<= n, r <=1000


Example:

Input:

1

12 11

Output:

12

** For More Input/Output Examples Use 'Expected Output' option **

Author: sujnesh


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