Mathematics · 2021
JEE Main · 25 July 2021, Shift 2 · Q87
If the co-efficients of x^7 and x^8 in the expansion of (2+x/3)^n are equal, then the value of n is equal to \ \ \ \.
If the co-efficients of $\displaystyle x^7$ and $\displaystyle x^8$ in the expansion of $\displaystyle \left(2+\frac{x}{3}\right)^{\mathrm{n}}$ are equal, then the value of n is equal to \_\_\_\_.
Official answer
55
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.