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Let A={1,2,3,4,.........,n} and B={a,b}.Then the number of surjective functions from A to B is(a) ^nP2 (b)2n-2 (c)2n-1 (d)NOT |
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Answer» A={1,2,3,......n} B={a,b} A has n elements B has 2 elements number of surjection is 2n−2 So, option (b) is correct
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