1.
Sum to n terms of the series is
2.
If the sum of an infinite GP and the sum of square of its term is 3, then the common ratio of the first series is
3.
The th term of the series will be
4.
If and are in A.P., then are in
5.
If
\log_{9} a+\log_{3} b+\log_{9} c=2
\log_{16} a+\log_{16} b+\log_{4} c=2, then
6.
If the th term of an AP be th term be , then its th term will be
7.
The sum of the series is equal to
8.
If and then the sum of the series upto, is
9.
If and , then is equal to
10.
be two sequences given by and for all then is equal to