Question

The greatest coefficient in the expansion of (1+x)²ⁿ⁺² is 

A)\((2n)!\over(n!)^2\)

B)\((2n+2)!\over[(n+1)!]^2\)

C)\((2n+2)!\over n!(n+1)!\)

D) \((2n)!\over n!(n+1)!\)

 

Answer 1

correct option is B) \((2n+2)!\over [(n+1)!]^2\)