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 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 x6 , then n is equal to
14
If n is odd then c02 - c12 + c22 - c32 + ............. + (-1)ncn2 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 rth 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 xp and xq 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
6th term in expansion of is
