Math CentralQuandaries & Queries


Question from Carri:

How many 4-digit combinations can be made out of digits 1, 2, 3, 4, & 5 using each number once? What are the combinations?

Hi Carri,

If you are to select 4 digits from 1, 2, 3, 4 and 5 you must leave out 1 digit. How many ways are there to select 1 digit to leave out?


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