1.

A and B arenon-empty sets such that absA = m, absB = n. How many relations can be defined from A to B ? ( Remember that the number of relations is the number of subsets of A xx B) .

Answer»

SOLUTION :`absA` = m, `absB` = N
`rArr abs (A XX B)` = mn
A RELATIONS is a from of A to B
=NUMBER of subset of `A xx B`
`2^mn (because abs(A xx B) = mn)


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