The number of one-one functions from $\{1,2,3\}$ to $\{a,b,c,d,e\}$ is

✅ Correct Answer: 60

Explanation

Number of one-one functions $= {}^5P_3$ $= 5! / 2! = 60$

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The number of one-one functions from $\{1,2,3\}$ to $\{a,b,c,d,e\}$ is | ACME Academy