If the coefficient of (2r+1)^ th term and (r+2)^ th term in the expansion of (1+x)^ 43 are equal, then r is...

Question

If the coefficient of (2r+1)^ th term and (r+2)^ th term in the expansion of (1+x)^ 43 are equal, then r is equal to

Accepted Answer

(B)

JEE Main Mathematics question