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If |A|=|(a,4),(4,a)| and |A^(3)|=729, th...

If `|A|=|(a,4),(4,a)|` and `|A^(3)|=729`, then the value of a is :

A

`pm6`

B

`pm5`

C

`pm4`

D

`pm3`

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EDUCART PUBLICATION-SAMPLE PAPER 09-SECTIONS-B
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