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Find the number of bijective functions between two sets A = {1, 2, 3, 4} and B = {5, 6, 7, 8} such that f(1) = 5.

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Find the number of bijective functions between two sets A = {1, 2, 3, 4} and B = {5, 6, 7, 8} such that f(1) = 5.

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Hence, the number of bijective functions

= 3P3 = 3! = 6.

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