Mathematics · 2023
JEE Main · 15 April 2023, Shift 1 · Q23
The number of elements in the set {n ∈ N: 10 ≤ n ≤ 100. and 3^n-3 is a multiple of 7} is ____.
The number of elements in the set $\displaystyle \left\{n \in \mathbb{N}: 10 \leq n \leq 100\right.$ and $\displaystyle 3^n-3$ is a multiple of $\displaystyle 7$} is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
15
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JEE Main 2023 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.