The sum of the series 1 1+1^2+1^4 + 2 1+2^2+2^4 + 3 1+3^2+3^4 + to n terms is

JEE Main Mathematics question

The sum of the series to terms is

Answer: (B)

Factor ; since , the term is . Because , the sum telescopes to . That

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

Question ID VK-021707