Q25 of 51 Page 18

Mark the correct alternative in the following :

The coefficient of in the expansion of is.


Given:



(1+x)21+(1+x)22+...+(1+x)30


Coefficient of x5in any expansion = ; i.e. nC5


So, coefficient of x5 in above expansion = 21C5 + 22C5 + 23C5 +…+ 30C5

More from this chapter

All 51 →
23

Mark the correct alternative in the following :

The coefficient of in the expansion of is


 24

Mark the correct alternative in the following :

The coefficient of the term independent of x in the expansion of is


 26

Mark the correct alternative in the following :

The coefficient of in the expansion is.


 27

Mark the correct alternative in the following :

If the coefficients of the term and the term in the expansion of are equal, then the value of n is