JEE Math Practice Question
The probability that a randomly chosen one-one function from the set {a, b, c, d} to the set {1, 2, 3, 4, 5} satisfies f(a) + 2f(b) $$-$$ f(c) = f(d) is :
- A.$${1 \over {24}}$$
- B.$${1 \over {40}}$$
- C.$${1 \over {30}}$$
- D.$${1 \over {20}}$$
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