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Mark the correct alternative in the following question:Let A = {1, 2, ... , n} and B = {a, b}. Then the number of subjections from A into B is(a) nP2 (b) 2n - 2 (c) 2n - 1 (d) nC2 |
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Answer» Mark the correct alternative in the following question: Let A = {1, 2, ... , n} and B = {a, b}. Then the number of subjections from A into B is (a) nP2 (b) 2n 2 (c) 2n 1 (d) nC2 |
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