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Open the Matrix (3×3 / 2×2) calculator →This is one of 44 tools in the ABC Chemistry Calculator Suite, a free calculator built for IIT-JAM, CSIR-NET, GATE and CUET (Chemical Science) preparation. Nothing is behind a login and no result is stored on a server — the arithmetic runs in your own browser.
The link above opens the suite with Matrix (3×3 / 2×2) already selected, so you do not have to find it in the menu.