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Mathematics · 2026

JEE Main · 4 April 2026, Shift 1 · Q6

Let A = [1, 1, 2; -2, 0, 1; 1, 3, 5]. Then the sum of all elements of the matrix adj ( adj (2( adj A )^-1)) is equal to:

Let $\displaystyle \mathrm{A}=\left[\begin{array}{ccc}1 & 1 & 2 \\ -2 & 0 & 1 \\ 1 & 3 & 5\end{array}\right]$. Then the sum of all elements of the matrix $\displaystyle \operatorname{adj}\left(\operatorname{adj}\left(2(\operatorname{adj} \mathrm{~A})^{-1}\right)\right)$ is equal to:
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.