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प्रश्न
Let A and B be any two sets such that n(B) = p, n(A) = q then the total number of functions f : A → B is equal to ______.
उत्तर
Let A and B be any two sets such that n(B) = p, n(A) = q then the total number of functions f : A → B is equal to pq functions.
Explanation:
Any element of set A
Say xi can be connected with the element of set B in p ways.
Hence, there are exactly pq functions.
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