How Many Different Three-Digit Numbers Can Be Written Using Digits $\{ 1,2,3,4,5 \}$

question 111

Multiple Choice

How many different three-digit numbers can be written using digits from the set $\{ 1,2,3,4,5 \}$ without any repeating digits?

• A) 120
• B) 10
• C) 20
• D) 60

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Definitions:

LIFO Perpetual

A perpetual inventory system that uses the Last-In, First-Out method to account for inventory costs, where the most recently acquired items are considered sold first.

FIFO

First In, First Out, an inventory valuation method where goods purchased or produced first are sold or used first.

LIFO Periodic

An inventory valuation method, Last In First Out, used in periodic inventory systems where the last items added to the inventory are assumed to be sold first.