Section EBAnswer any ten from the following+8000 – InterviewSolution

1.

Section EBAnswer any ten from the following+8000

Answer»

➡1^3+2^3+3^3+.....+20^3

As we know that summation of n^3={n (n+1)/2}^2Here n=20

➡ Sum={20 (20+1)/2}^2

➡ Sum=(10×21)^2

➡ Sum=210^2

➡ Sum=44100

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