The sum to the series 1 1.2 + 1.3 1.2.3.4 + 1.3.5 1.2.3.4.5.6 + is

JEE Main Mathematics question

The sum to the series is

Answer: (B)

The term is , because

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

Question ID VK-021599