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 (a + b + c)n will be
n + 1
n + 3
None of these
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 the 4th term in the expansion of is independent of x , then n is equal to
5
6
9
The value of (1.002)12 upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
Cubroot of 217 is
6.01
6.04
6.02
The number of terms in the expansion (2x - 3y)5 is
10
30
The sum of the coefficient in the expansion of (1+x - 3x2)2163 will be
0
1
-1
22163
Tenth term of the expansion (2x - y)71 is
-220 x2 y9
220 x2 y9
220 x2 y10
-220 x3 y9
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
