Which of following pair of natural numbers is both relatively prime... VIDEO
Which of following pair of natural numbers is both relatively prime (co-prime) as well as twin prime?
\( \mathrm{P} \)
(1) \( (1,3) \)
(2) \( (9,11) \)
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(3) \( (11,13) \)
(4) \( (25,27) \)
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