The value of (0.99)15 is
0.8432
0.8601
0.8502
None of these
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
The sum of the coefficient in the expansion of (1+x - 3x2)2163 will be
0
1
-1
22163
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 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 number of terms in the expansion of (1 + 6x + 9x2)23 is
24
46
47
48
Tenth term of the expansion (2x - y)71 is
-220 x2 y9
220 x2 y9
220 x2 y10
-220 x3 y9
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
6th term in expansion of is
Cuberoot of 217 is
6.01
6.04
6.02
