nc0 - 1/2 nc1 + 1/3 nc2 - ........ + (-1)n is equal to
n
1/n
1/(n + 1)
1/n - 1
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
If n∈N ,then x2n-1+y2n-1 is divisible by
x+y
x-y
x2+y2
x2+xy
The value of (1.002)12 upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
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 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
6th term in expansion of is
If the 4th term in the expansion of is independent of x , then n is equal to
5
6
9
If n N ,Then 23n - 1 is divisible by
2
3
7
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
