1.

If a set has n elements, then the number of relation on A is​

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ANSWER:

A relation has ordered pairs (a,b). For anti-symmetric relation, if (a,b) and (b,a) is present in relation R, then a = b. (That MEANS a is in relation with itself for any a). So for (a,a), total NUMBER of ordered pairs = n and total number of relation = 2n.



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