Question

The sum 1 + (1³ + 2³)÷(1 + 2) + (1³ + 2³ + 3³)÷(1 + 2 + 3)+ ........ (1³ + 2³ + 3³ + ....+ 15³)÷(1 + 2 + 3 + ....... + 15) - 1/2(1 + 2 + 3 + ..... +15) is equal to
(A) 620 (B) 1860
(C) 1240 (D) 660

Answer 1

$\huge\bold{Answer}$

The answer is 1240

Answer 2

Answer:

solve it with the help of calculator....you will be get bettr or right answer....

and answer is 1240....