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
In the expansion of , the term containing x4 is
70 x4
60 x4
56 x4
None of these
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
If the coefficients of x2 and x3 in the expansion of (3 + ax)9 be same, then the value of a is
3/7
7/3
7/9
9/7
The value of (1.002)12 upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254
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
The value of (0.99)15 is
0.8432
0.8601
0.8502
The sum of the coefficient in the expansion of (1+x - 3x2)2163 will be
0
1
-1
22163
