Tenth term of the expansion (2x - y)71 is
-220 x2 y9
220 x2 y9
220 x2 y10
-220 x3 y9
If n N ,Then 23n - 1 is divisible by
2
3
5
7
If n∈N ,then x2n-1+y2n-1 is divisible by
x+y
x-y
x2+y2
x2+xy
The value of (0.99)15 is
0.8432
0.8601
0.8502
None of these
If the 4th term in the expansion of is independent of x , then n is equal to
6
9
The number of terms in the expansion of (1 + 6x + 9x2)23 is
24
46
47
48
The number of terms in the expansion (a + b + c)n will be
n + 1
n + 3
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
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
n
1/n
1/(n + 1)
1/n - 1
