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Probability that a one-one function from...

Probability that a one-one function from `{a,b,c,d}` to `{1,2,3,4,5}` satisfies `f(a)+2f(b)-f(c)=f(d)`

A

`1/30`

B

`1/24`

C

`1/20`

D

`1/40`

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