The sum 1+(1³+2³)/(1+2)+... | Sequences & Series | JEE Main

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JEE MAIN 2019

10-04-2019 S2

Question

The sum $1+\frac{1^3+2^3}{1+2}+\frac{1^3+2^3+3^3}{1+2+3}+\ldots \ldots$ $$ +\frac{1^3+2^3+3^3+\ldots \ldots+15^3}{1+2+3+\ldots \ldots+15}-\frac{1}{2}(1+2+3 \ldots .+15) $$ is equal to :

Select the correct option:

A

1860

B

620

C

660

D

1240

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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