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[" 28.Let "A={1,2,3,4}" .Number of funct...

[" 28.Let "A={1,2,3,4}" .Number of function "f:A rarr A" are three satisfying "fof(x)],[=x AA x in A," is : "],[[" (a) "10," (b) "11," (c) "12," (d) "13]]

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