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If \beginbmatrix1 & 1 \\ 0 & 1\endbmatrix \beginbmatrix1 & 2 \\ 0 & 1\endbmatrix \beginbmatrix1 & 3 \\ 0 & 1\endbmatrix *s \beginbmatrix1 & n-1 \\ 0 & 1\endbmatrix = \beginbmatrix1 & 78 \\ 0 & 1\endbmatrix, then the inverse of \beginbmatrix1 & n \\ 0 & 1\endbmatrix is: | Watch the step-by-step video solution for this NIMCET PYQ.