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The sum of the cubes of 1st n natural nu...

The sum of the cubes of 1st n natural numbers is

A

a)`n^3`

B

b)`[(n(n+1))/2]^3`

C

c)1/6n(n+1)(2n+1)

D

d)`[(n(n+1))/2]^2`

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UNITED BOOK HOUSE-MCQ-EXERCISE
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