MCQ
The sum of ${1^3} + {2^3} + {3^3} + {4^3} + ..... + {15^3}$, is
  • A
    $22000$
  • B
    $10000$
  • $14400$
  • D
    $15000$

Answer

Correct option: C.
$14400$
c
(c) Sum of cubes of $'n'$ natural number

$ = \frac{{{n^2}{{(n + 1)}^2}}}{4} = \frac{{{{15}^2}{{(16)}^2}}}{4} = 14,400$.

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