Mathematics · 2022
JEE Main · 25 June 2022, Shift 1 · Q29
Let A be a 3 × 3 matrix having entries from the set {-1, 0, 1}. The number of all such matrices A having sum of all the entries equal to 5, is \ \ \…
Let A be a $\displaystyle 3$ × $\displaystyle 3$ matrix having entries from the set {-$\displaystyle 1$, $\displaystyle 0$, $\displaystyle 1$}. The number of all such matrices A having sum of all the entries equal to $\displaystyle 5$, is \_\_\_\_.
Official answer
414
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.