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how many one-to-one functions are there from a set with five elements to sets with the following number of elements? a) 4 b) 5 c) 6 d) 7
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how many one-to-one functions are there from a set with five elements to sets with the following number of elements? a) 4 b) 5 c) 6 d) 7

User Mgnoonan
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4 votes

a)4

so it's seven factorial divided by 7-5 factorial

User Chris Neve
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