If the coefficients of the (m+1)th term and the (m+3)th term in the expansion of (1+x)^ 20 are equal then the...

Question

If the coefficients of the (m+1)th term and the (m+3)th term in the expansion of (1+x)^ 20 are equal then the value of m is

Accepted Answer

(C)

JEE Advanced Mathematics question