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
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
The number of terms in the expansion (2x - 3y)5 is
5
6
30
The value of (1.002)12 upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
nc0 - 1/2 nc1 + 1/3 nc2 - ........ + (-1)n is equal to
1/(n + 1)
1/n - 1
is equal to.
100
120
-120
None of these
If n is odd then c02 - c12 + c22 - c32 + ............. + (-1)ncn2 is equal to
0
1
∞
n! / (n/2)2!
The number of terms in the expansion (a + b + c)n will be
n + 1
n + 3
For all n ∈ N, n2 + n is a/an
Odd natural number
Even natural number
Can't be defined
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
