MCQ
The sum of the series $1^3 + 2^3 + 3^3 + ………..n^3$ is:
- A$\Big(\frac{\text{(n}+1)}{2}\Big)^2$
- B$\Big(\frac{\text{n}}{2}\Big)^2$
- C$\Big(\frac{\text{n}\text{(n}+1)}{2}\Big)$
- ✓$\Big(\frac{\text{n}\text{(n}+1)}{2}\Big)^2$
✓
Answer
Correct option: D.
$\Big(\frac{\text{n}\text{(n}+1)}{2}\Big)^2$
Given, series is $1^3 + 2^3 + 3^3 + ……….. n^3$
$\Big(\frac{\text{n}\text{(n}+1)}{2}\Big)^2$
$\Big(\frac{\text{n}\text{(n}+1)}{2}\Big)^2$
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