Question

If three successive coefficient in the expansion of (1 + x)n are in A.P., then (n + 2) is

Solution

Correct option is

A perfect square

SIMILAR QUESTIONS

Q1

Coefficient of the term independent of x in the ex pansion of  is

Q2

Value (s) of x for which the fourth term in the ex pansion of  is 40 is (are)

Q4

If x2r occurs in  then n – 2r must be of the form

Q5

If the coefficient of rth, (r + 1)th and (r  + 2)th terms are in A.P., then n is a root of the equation

Q6

 

 then n must be equal to

Q7

If in the expansion of (21/3 + 3–1/3)n, the ratio of the 7th term from the beginning to the 7th terms from the end is 1: 6, then n is equal to

Q8

If sum of the coefficients of x7 and x4 in the expansion of 

Q9

Coefficient of x9 in the expansion of