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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`

A

`mxx3`

B

`3xx3`

C

`mxxn`

D

`3xxn`

Text Solution

Verified by Experts

The correct Answer is:
D
`A_(3xxm)` and `B_(3xxn)` two matrices. If `m=n`, then A and B have same orders as `3xxn` each. So the order of (5A-2B) should be same as `3xxn`.
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