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Question

If A={x:xϵM, x is a factor of 6}={1,2,3,6}
and B={x:xϵN,  x is a factor of 8} = {1,2,4,8}. Then find:
 

(i) AB

(ii) AB

(iii) AB

(iv) BA


Solution

We have

(i) AB={1,2,3,6}{1,2,4,8}={1,2,3,4,6,8}

(ii) AB={1,2,3,6}{1,2,4,8}={1,2}

(iii) AB={1,2,3,6}{1,2,4,8}={3,6}

(iv) BA={1,2,4,8}{1,2,3,6}={4,8}

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