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If A and B are two matrices of the order...

If` A` and` B `are two matrices of the order` 3 xx m` and `3 xx n`, respectively and `m= n,` then order of matrix `(5A-2B)` is (a) `m xx 3` (b) `3 xx 3` (c) `m xx n` (d) `3 xx n`

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