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If A is a matrix of order [x- 1] xx 3 an...

If A is a matrix of order `[x- 1] xx 3` and B is matrix of order `3 xx [y-2]`,where [ ] represent greatest integer function, such that AB is a matrix of order `4xx5` then

A

`x in[5,6)`

B

`x in[5,6]`

C

`yin[7,8]`

D

`yin[8,9]`

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The correct Answer is:
A
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