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
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
None of these
If the 4th term in the expansion of is independent of x , then n is equal to
5
6
9
6th term in expansion of is
Tenth term of the expansion (2x - y)71 is
-220 x2 y9
220 x2 y9
220 x2 y10
-220 x3 y9
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
Cuberoot of 217 is
6.01
6.04
6.02
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 is even , then the middle term in the expansion of is 924 x6 , then n is equal to
10
12
14
If n N ,Then 23n-1 is divisible by
2
3
7
