JEE Main 2014 Mathematics question

Mathematics Sequence and Series JEE Main 2014

If the sum up to 20 terms is equal to , then k is equal to

(1)240
(2)120Correct
(3)60
(4)180

Answer: (2)

Solution

The r-th term is $ = = 6(1r -

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-104410