nc0 - 1/2 nc1 + 1/3 nc2 - ........ + (-1)n is equal to
n
1/n
1/(n+1)
1/(n-1)
If the coefficients of x2 and x3 in the expansion of (3 + ax)9 be same, then the value of a is
3/7
7/3
7/9
9/7
The number of terms in the expansion of (3 + 2√5)18 - (3 - 2√5)18 is
11 terms
10 terms
9 terms
8 terms
6th term in expansion of is
None of these
The sum of the coefficient in the expansion of (1+x - 3 x2)2163 will be
0
1
-1
22163
The number of terms in the expansion of (1 + 6 x + 9 x2)23 is
24
46
47
48
For all n ∈ N, n2 + n is a
Odd natural number
Even natural number
Can't be defined
The remainder when 22006 + 2007 is divided by 17 is
11
13
14
7
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 Cr = , then is equal to
