Mark the correct alternative in the following :
If the fifth term of the expansion does not contain ‘a’. Then n is equal to

Given:

Term 5 ; i.e. k=4:

⇒2n-8-12=0

⇒ n=10

Question

Mark the correct alternative in the following : If the fifth term of the expansion does not contain ‘a’. Then n is equal to

Philoid · Accepted Answer

Given:

Term 5 ; i.e. k=4:

⇒2n-8-12=0

⇒ n=10