# Q.1 Find the union of each of the following pairs of sets :    (iii)   A = {x : x is a natural number and multiple of 3}                       B = {x : x is a natural number less than 6}

Here ,

A = {3,6,9,12,15,18,............}

B = {1,2,3,4,5,6}

Union of A and B is A $\cup$ B.

$\cup$ B = {1,2,3,4,5,6,9,12,15........}

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