6th term in expansion of is
None of these
The number of terms in the expansion (2x - 3y)5 is
5
6
10
30
If the coefficient of 7th and 13th term in the expansion of (1 + x ) n are equal , then n is equal to.
15
18
20
If n is odd then c02 - c12 + c22 - c32 + ............. + (-1)ncn2 is equal to
0
1
∞
n! / (n/2)2!
If the 4th term in the expansion of is independent of x , then n is equal to
9
is equal to.
100
120
-120
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
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
If (1 + a x)n = 1 + 8 x + 24 x2 + ........ then the value of a and n is
2, 4
2, 3
3, 6
1, 2
