The number of terms in the expansion of (1 + 6x + 9x^{2})^{23} is
24
46
47
48
If the coefficient of 7^{th} and 13^{th} 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 r^{th} and (r + 2)^{th} term be equal , then r is equal to
2n
n/2
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
^{n}c_{0} - ^{1}/2 ^{n}c_{1} + ^{1}/3 ^{n}c_{2} - ........ + (-1)^{n } is equal to
n
^{1}/n
^{1}/(n + 1)
^{1}/n - 1
Tenth term of the expansion (2x - y)^{71} is
-220 x^{2} y^{9}
220 x^{2} y^{9}
220 x^{2} y^{10}
-220 x^{3} y^{9}
The value of the expression x^{5} + 10 x^{4}a + 40 x^{3} a^{2} + 80 x^{2}a^{3} + 80 x a^{4} + 3^{2} a^{5} is
(x + a)^{5}
(3n + a)^{5}
(x + 2a)^{5}
(x + 2a)^{3}
6th term in expansion of is
None of these
If n N ,Then 2^{3n} - 1 is divisible by
2
3
5
7
The value of (1.002)^{12} upto fourth place of decimal is
1.0242
1.0245
1.0004
1.0254