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If A={x:x" is a multiple of 3"} and B=...

If `A={x:x" is a multiple of 3"}` and
`B={x:x" is a multiple of 5"}`. Then, `A nn B` is given by

A

`{3,6,9,….}`

B

`{5,10,15,…}`

C

`{15,30,45,…}`

D

none of these.

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The correct Answer is:
C
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