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Let A={x1,x2,x3,x4,x5,x6} and f:A→A. The number of bijective functions such that f(xi)≠xi for exactly 3 elements (i=1 to 6) is

Answer» Let A={x1,x2,x3,x4,x5,x6} and f:AA. The number of bijective functions such that f(xi)xi for exactly 3 elements (i=1 to 6) is


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