MathsJEE Main 24 Jan 2026, Shift 1·Q25·Numerical·Moderate

Matrices & Determinants · Trace of transpose product

The number of

3 \times 2

matrices

A

, which can be formed using the elements of the set

\{-2, -1, 0,\allowbreak 1, 2\}

such that the sum of all the diagonal elements of

A^{T}A

is 5, is .

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