Mathematics · 2020
JEE Main · 8 January 2020, Shift 2 · Q72
The sum, Σ_n=1^7 (n(n+1)(2 n+1))/4 is equal to \ \ \ \.
The sum, $\displaystyle \sum_{n=1}^7 \frac{n(n+1)(2 n+1)}{4}$ is equal to
\_\_\_\_.
Official answer
504
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.