medium · GMAT Quant
A records office holds case files numbered consecutively from 1 to 27. Exactly four of the case files will be selected, and the order of selection does not matter.
In how many different ways can the four case files be selected so that at least one of their numbers is a multiple of 5?
- 5
- 7,700
- 10,235
- 17,545
- 17,550
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