if A= {1,2,3,4},then the number of functions on the set A ,which are not one-one is 1) 232 2) 240 3) 248 4) 256

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if A= {1,2,3,4},then the number of functions on the set A ,which are not one-one is 1) 232 2) 240 3) 248 4) 256

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adyashadashriya 26th Jul, 2020

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ojaswiyolo Student Expert 26th Jul, 2020

HEy Adyasha

The total number of functions that can be defined are 2(to the power 2n) that is 256. Out of this 24 functions are one one and onto. Hence the functions that are not one one are 256-24 that is 232. I hope I could solve your doubt. All the best.

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