Mathematics · 2022
JEE Main · 29 July 2022, Shift 1 · Q26
The number of matrices of order 3 × 3, whose entries are either 0 or 1 and the sum of all the entries is a prime number, is \ \ \ \.
The number of matrices of order $\displaystyle 3$ × $\displaystyle 3$ , whose entries are either $\displaystyle 0$ or $\displaystyle 1$ and the sum of all the entries is a prime number, is \_\_\_\_.
Official answer
282
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.