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Consider the function f: A -> A where A...

Consider the function `f: A -> A` where `A:{1,2,3,4,5}` which satisfy the condition `f(f(x))=x,` If the number of such functions are `lambda,` then

A

10

B

40

C

41

D

31

Text Solution

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The correct Answer is:
C
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ARIHANT MATHS-FUNCTIONS-Exercise (Questions Asked In Previous 13 Years Exam)
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  19. If F :[1,oo)->[2,oo) is given by f(x)=x+1/x ,t h e n \ f^(-1)(x) equal...

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