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Three different rings are to be worn on 4 fingers of one hand, with at most one ring on any finger. In how many ways can they be worn?

Competition practicePermutations & Combinations
  • A64
  • B81
  • C4
  • D24

Step-by-Step Solution

First ring: 4 fingers, second: 3, third: 2. allows two rings on one finger.)
Answer: D) 24

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