Question

Q.19) Find the sum of 15 consecutive cubes starting from 1.​

Answer 1

Answer:

The formula is such that 1^3+2^3+3^3+....…..……+n^3=[n(n+1)/2]^2

So here according to the question, n=15

Therefore, the sum of 15 consecutive cubes from 1 is [15×16/2]^2=14400.

Hope that helps.