Mathematics · 2026
JEE Main · 24 January 2026, Shift 1 · Q21
The number of 3 × 2 matrices A, which can be formed using the elements of the set {-2,-1,0,1,2} such that the sum of all the diagonal elements of A^T…
The number of $\displaystyle 3 \times 2$ matrices A , which can be formed using the elements of the set $\displaystyle \{-2,-1,0,1,2\}$ such that the sum of all the diagonal elements of $\displaystyle \mathrm{A}^{\mathrm{T}} \mathrm{A}$ is $\displaystyle 5$, is
$\displaystyle \_\_\_\_$
Official answer
From NTA’s final answer key for this paper.
312
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.