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Linear AlgebraMediumRow Reduction & Rank

Row Reduction & Rank · Medium problem

What is the rank of M=(−1211108−4−240−223524)M = \begin{pmatrix}-12 & 11 & 10 & 8 \\ -4 & -2 & 4 & 0 \\ -2 & 23 & 5 & 24\end{pmatrix}?