If the coefficient of 7^{th} and 13^{th} term in the expansion of (1 + x ) ^{n} are equal , then n is equal to
10
15
18
20
The number of terms in the expansion (a + b + c)^{n} will be
n + 1
n + 3
None of these
The value of (1.002)^{12} upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
If the ratio of the coefficient of third and fourth term in the expansion of (x - 1/2x )^{n} is 1 : 2 , then the value of n will be
16
12
-10
If n is even , then the middle term in the expansion of is 924 x^{6} , then n is equal to
14
If n is odd then c_{0}^{2} - c_{1}^{2} + c_{2}^{2} - c_{3}^{2} + ............. + (-1)^{n}c_{n}^{2} is equal to
0
1
∞
n! / (n/2)^{2}!
is equal to
100
120
-120
If in the expansion of (1 + x )^{n} , the coefficient of r^{th} and (r + 2)^{th} term be equal , then r is equal to
2n
n/2
If p and q be positive , then the coefficient of x^{p} and x^{q} in the expansion of ( 1 + x ) ^{p+q} will be
Equal
Equal in magnitude but opposite in sign
Reciprocal to each other
None of the above
6^{th} term in expansion of is