If N(a)={an:ninN}, then N(5) nn N(7) equ...

If `N_(a)={an:ninN}`, then `N_(5) nn N_(7)` equals

A

1) `N_(7)`

B

2) `N`

C

3) `N_(35)`

D

4) `N_(5)`

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The correct Answer is:

C

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