Mark the correct alternative in the following :
If the sum of the binomial coefficients of the expansion is equal to 256, then the term independent of x is
Given:
Sum of binomial coefficients = 2n
=256
⇒2n=28
⇒ n=8
so total terms = n+1
=9
Middle term = 5th term; i.e. k=4
So, term independent of
= 1120