Mark the correct alternative in the following :

In the expansion of , the term independent of x is

Mark the correct alternative in the following :

In the expansion of , the term independent of x is

Mark the correct alternative in the following :

If in the expansion of (1 + y)ⁿ, the coefficients of 5^th, 6^th and 7^th terms are in A.P., then n is equal to

Mark the correct alternative in the following :

If the sum of odd numbered terms and the sum of even numbered terms in the expansion of are A and B respectively, then the value of is.

Mark the correct alternative in the following :

If the coefficient of x in is 270, then =