If in the binomial expansion of ,the co-efficients of the 4th and 13th terms are equal to each other, the value of n is
9
12
15
17
As we learnt in
The 4th term
Thus n=15
Option 1)
9
Incorrect
Option 2)
12
Incorrect
Option 3)
15
Correct
Option 4)
17
Incorrect