Mark the correct alternative in the following :

The coefficient of x^-17 in the expansion of is

Mark the correct alternative in the following :

If A and B are the sums of odd and even terms respectively in the expansion of , then is equal to

Mark the correct alternative in the following :

The number of irrational terms in the expansion of is

Mark the correct alternative in the following :

In the expansion of , the term without x is equal to

Mark the correct alternative in the following :

If in the expansion of , the coefficients of and terms are equal, then the value of r is