Q. 453.5( 2 Votes )

If the 17th and 18th terms in the expansion of (2 + a)50 are equal, find the value of a.

Answer :

Given :

To Find : value of a

For (2 + a)50

A=2, b=a and n=50

We have,

For the 17th term, r=16

For the 18th term, r=17

As 17th and 18th terms are equal



• a = 1122

Conclusion : value of a = 1122

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.