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Let M be the set of men and R is a relat...

Let M be the set of men and R is a relation 'is son of` defined on M. Then, R is (a) an equivalence relation (b) a symmetric relation only (c) a transitive relation only (d) None of the above

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Set `M` is the set of men.
`R = {a,b): a` is son of `b` }.
Let `(x, y) in R => x` is son of `y`.
...
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