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find total number of possible odd functions f:A---->A where A={ -2,-1,0,1,2}

Hint :USE permutation or combination.Thank you

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Michael B. | Doctor Loves to Teach Computer, StatisticsDoctor Loves to Teach Computer, Statisti...
5.0 5.0 (1 lesson ratings) (1)
This isn't my area, but since there aren't any other answers yet ...
It seems you want to count the functions where -(f(x)) = f(-x) for each x. So you have 5 choices for f(-2)--it could = -2, -1, 0, 1, or 2, but that choice also determines f(2) since it has to be the opposite of f(-2). Does f(0) have more than one choice? Can you go from there to find the answer?
Not sure I've got the right idea but perhaps it will help.