Question:
Statement-1 : The sum of the series $1+(1+2+4)+(4+6+9)+(9+12+16)$ $+\ldots \ldots .+(361+380+400)$ is $8000 .$
Statement-2 : $\sum_{\mathrm{k}=1}^{\mathrm{n}}\left(\mathrm{k}^{3}-(\mathrm{k}-1)^{3}\right)=\mathrm{n}^{3}$, for any natural number $\mathrm{n}$.
Correct Option: , 4
Solution:
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