Question

what is the formula of 1 cube + 2 cube + 3 cube and so on in n cube​

Answer 1

Step-by-step explanation:

It seems that the sum is always square, but what is even more remarkable is that the sum of the first n cubes, 13+23+... + n 3 = ( n ( n +1)/2)2, which is the square of the n th triangle number.

Answer 2

Given:

• A number series as 1³+2³+3³+4⁴+.........n³.

To Find :

• The formula of the the given series.

Answer:

Given series is 1³+2³+3³+4³+.......n³

It is clear that it is the sum of the cubes of first n nautural numbers, whose formula is stated below,

$\large{\boxed{\red{\sf{\leadsto [\dfrac{n(n+1)}{2}]^{2}}}}}$