In how many ways 5 different rings can be worn on 4 fingers?
Question
In how many ways 5 different rings can be worn on 4 fingers?
Solution
This problem can be solved using the concept of permutations in combinatorics.
Step 1: Understand the problem We have 5 different rings and 4 fingers. We need to find out in how many ways we can wear these rings.
Step 2: Apply the formula for permutations The formula for permutations is nPr = n! / (n-r)!, where n is the total number of items, r is the number of items to choose, and "!" denotes factorial.
Step 3: Calculate In this case, n = 5 (the number of rings) and r = 4 (the number of fingers). So, we need to calculate 5P4 = 5! / (5-4)! = 5! / 1! = 120.
So, there are 120 ways to wear 5 different rings on 4 fingers.
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