On the set \( N \) of natural numbers, define the relation
\( R \) by \( a R b \) iff the \( G C.... VIDEO
On the set \( N \) of natural numbers, define the relation
P
\( R \) by \( a R b \) iff the \( G C D \) of \( a \) and \( b \) is 2 , then \( R \) is
(1) reflexive but not symmetric
(2) symmetric only
(3) equivalence
(4) neither reflexive, nor symmetric and transitive
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