Q.

The relation R defined on the set of natural numbers as a, b: a differs from b by 3, is given by

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1, 4, 2, 5, 3, 6......

4, 1, 5, 2, 6, 3......

1, 3, 2, 6, 3, 9......

None of these

answer is 2.

(Detailed Solution Below)

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Detailed Solution

R=a, b: a, b∈N, a-b=3=n+3, n: n∈N=4, 1, 5, 2, 6, 3.......

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