Set A has 3 elements and the set B has 4 elements. Then the number of – InterviewSolution

1.	Set A has 3 elements and the set B has 4 elements. Then the number of injective mappings that can be defined from A to B is(A) 144 (B) 12(C) 24 (D) 64
Answer» The correct choice is (C). The total number of injective mappings from the set containing 3 elements into the set containing 4 elements is ⁴P₃ = 4! = 24.

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