If n is even , then the middle term in the expansion of is 924 x6 , then n is equal to
10
12
14
None of these
If the coefficient of 7th and 13th term in the expansion of (1 + x ) n are equal , then n is equal to.
15
18
20
The value of the expression x5 + 10 x4a + 40 x3 a2 + 80 x2a3 + 80 x a4 + 32 a5 is
(x + a)5
(3n + a)5
(x + 2a)5
(x + 2a)3
If in the expansion of (1 + x )n , the coefficient of rth and (r + 2)th term be equal , then r is equal to
2n
n/2
The value of (0.99)15 is
0.8432
0.8601
0.8502
If the 4th term in the expansion of is independent of x , then n is equal to
5
6
9
If the coefficients of x2 and x3 in the expansion of (3 + ax)9 be same, then the value of a is
3/7
7/3
7/9
9/7
6th term in expansion of is
The number of terms in the expansion of (3 + 2√5)18 - (3 - 2√5)18 is
11 terms
10 terms
9 terms
8 terms
Cuberoot of 217 is
6.01
6.04
6.02
