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The set A has 4 elements and the Set B has 5 elements then the number of injective mappings that can be defined from A to B is (1) 72 (2) 120 (3) 144 (4) 60 |
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Answer» Correct option (2) 120 Explanation: Number of injective mappings = nPm = 5P4 = 120. |
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