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If AxxB=phi then which of the following ...

If `AxxB=phi` then which of the following is necessarily true ?

A

`A=phi` or `B=phi`

B

`A=phi` and `B=phi`

C

Both (A) and (B)

D

None of these

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The correct Answer is:
A
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CENGAGE-RELATIONS AND FUNCTIONS -TEST YOURSELF (Level 3) (Multiple Choice Questions)
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  7. R' is a relation from a to B and the mapping is then which of th...

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