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Find the number of one-one function f(A) - A satisfying f(f(i)) =i. Given that A has four elements (1,2,3,4 ) .......... Sir plz explain briefly from basics

Ritik , 7 Years ago
Grade 12th pass
anser 1 Answers
Anish Singhal
Number of one one function formula is n^m*m!, where f is a function from set A to B and n(A)=m and n(B)=n.
Last Activity: 7 Years ago
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