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If A and B are two sets such that A sub ...

If A and B are two sets such that `A sub B`, then what is `A cap B` ?

Text Solution

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Given, `A sub B` then `x in A rArr x in B`
i.e., all elements of set A are also the elements of set B
Now, `A cup B = {x : x in A or x in B}`
So, if `A sub B` then `A cup B = B`.
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