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
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
None of these
The sum of the coefficient in the expansion of (1+x - 3x2)2163 will be
0
1
-1
22163
In the expansion of , the coefficient of x-10 will be
12 a11
12 b11
12 a11 b
12 a11 b11
If the coefficient of 7th and 13th term in the expansion of (1 + x ) n are equal , then n is equal to
10
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
6th term in expansion of is
The number of terms in the expansion (a + b + c)n will be
n + 1
n + 3
If n is odd then c02 - c12 + c22 - c32 + ............. + (-1)ncn2 is equal to
∞
n! / (n/2)2!
The value of (1.002)12 upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
