Mathematics · 2021
JEE Main · 25 February 2021, Shift 2 · Q83
The total number of two digit numbers ' n ', such that 3^n +7^n is a multiple of 10, is \ \ \ \.
The total number of two digit numbers ' n ', such that $\displaystyle 3^{\mathrm{n}}+7^{\mathrm{n}}$ is a multiple of $\displaystyle 10$ , is \_\_\_\_.
Official answer
45
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.