SOLUTION: how many one to one correspondence are there between the sets {x,y,z,u,v} and {1,2,3,4,5} if in each correspondence a.x must correspond to 5? b.x must correspond t 5 and y to

Question 342508: how many one to one correspondence are there between the sets {x,y,z,u,v} and {1,2,3,4,5} if in each correspondence
a.x must correspond to 5?
b.x must correspond t 5 and y to 1?
c.x,y and z must correspond to odd numbers?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Hint: Think about 'x' being in slot 1, 'y' being in slot 2, etc all the way up to 'v' being in slot 5. So if order mattered, then {x,y,z,u,v} would mean that x maps to 1, y maps to 2, etc. On the other hand, if we have {y, z, u, v, x}, then y now maps to 1, z maps to 2, etc.

If you can think of it like that, then it really comes down to a problem about combinatorics (ie permutations and combinations).
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