If the 4th term in the expansion of is independent of x , then n is equal to
5
6
9
None of these
6th term in expansion of is
If n is even , then the middle term in the expansion of is 924 x6 , then n is equal to
10
12
14
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 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
is equal to.
100
120
-120
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
If (1 + ax)n = 1 + 8x + 24 x2 + ........ then the value of a and n is
2,4
2,3
3,6
1,2
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
For all n ∈ N, n2 + n is a
Odd natural number
Even natural number
Can't be defined