The sum of the coefficient in the expansion of (1+x - 3 x2)2163 will be
0
1
-1
22163
If the ratio of the coefficient of third and fourth term in the expansion of (x - 1/2 x )n is 1 : 2 , then the value of n will be
18
16
12
-10
The value of the expression x5 + 10 x4a + 40 x3 a2 + 80 x2a3 + 80 x a4 + 32 a5 is
(x + a)5
(3 n + a)5
(x + 2 a)5
(x + 2 a)3
If (1 + a x)n = 1 + 8 x + 24 x2 + ........ then the value of a and n is
2, 4
2, 3
3, 6
1, 2
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
None of these
If n is odd then c02 - c12 + c22 - c32 + ............. + (-1)ncn2 is equal to
∞
n! / (n/2)2!
If n is even , then the middle term in the expansion of is 924 x 6 , then n is equal to
10
14
6th term in expansion of is
The value of (0.99)15 is
0.8432
0.8601
0.8502
The number of terms in the expansion (a + b + c)n will be
n + 1
n + 3
