Let A be any finite set having n elements. Then number of one - one function from A to A are
A
` n^(2)`
B
` n!`
C
` 2n `
D
None of these
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The correct Answer is:
B
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Knowledge Check
Let A be a finite set containing 3 elements, then the number of functions from A to A is
A
512
B
511
C
27
D
26
Let A be a finite set containing n elements, then the number of relations on A is
A
`2^(n)`
B
`2^(n^(2))`
C
`n^(2)`
D
`n^(n)`
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