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  • If A is of the order 3 x 5 and B is of the order a x b. Then if BA is valid and AB is not valid.Which values of a and b are not possible?

If A is of the order 3 x 5 and B is of the order a x b. Then if BA is valid and AB is not valid.Which values of a and b are not possible?

Answers (1)

best_answer

Since BA is valid 

b = 3

As AB is not valid a\neq 5

a\ \epsilon\ \mathbb{N}-{5}

Posted by

Sayak

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