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Question

If A and B are two sets such that A={x:xN,x is a factor of 20} and B={y:yN,y is a factor of 30}, then find the AB

A
{1,2,4,5,10,20}
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B
{1,5,10,20}
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C
{1,2,5,15,20}
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D
{1,2,5,10}
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Solution

The correct option is D {1,2,5,10}
Given :
A={1,2,4,5,10,20}
B={1,2,3,5,6,10,15,30}

The intersection of two sets A and B, denoted by AB, consists of all elements that are both in A and B.
Hence AB={1,2,5,10}.

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