Posted by **arjit** on Wednesday, June 5, 2013 at 4:41am.

For how many pairs of positive integers n and k with n and k less than or equal to 20, is the number (2n)!(2k)!n!k!(n+k)! an integer?

## Answer this Question

## Related Questions

- pcm - For how many pairs of positive integers n and k with n and k less than or ...
- maths - For how many ordered pairs of positive integers n and k with n and k ...
- maths - For how many ordered pairs of positive integers n and k with n and k ...
- MATH - Let’s agree to say that a positive integer is prime-like if it is not ...
- math - Let’s agree to say that a positive integer is prime-like if it is not ...
- math - 35. If b is positive integers less than 400 and more than 100, then how ...
- math - Find the sum of all positive integers m such that 2^m can be expressed as...
- discrete math - Could someone help me with this induction proof. I know its true...
- discrete math - 1)prove that if x is rational and x not equal to 0, then 1/x is ...
- mats - Suppose f(x) is a polynomial with integer coefficients of degree 100. ...