Progression (Sequence and Series)Hard
Question
The sum of series
is
isOptions
A.

B.

C.

D.

More Progression (Sequence and Series) Questions
For a positive integer n let a(n) = 1 + , then...In an arranged series of n observations (n being an odd number) , the median is the value of -...If 1, log9 (31 − x + 2) and log3 (4.3x − 1) are in A.P., then x is equal to -...In the following two A.P.′s how many terms are identical ? 2,5,8,11.... to 60 terms, 3,5,7, ..... 50 terms...Given two numbers a and b, let A denotes the single A.M. and S denote the sum of n A.M.′s between a and b, then S/...
- 1 =
= 