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A key code must contain 4 numerals. There are 10 numerals available. Using these numerals, how many different key codes may be created?
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1 vote
A key code must contain 4 numerals. There are 10 numerals available. Using these numerals, how many different key codes may be created?

User Timing
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2 Answers

4 votes
about 68 different code combinations
User The IT Dejan
by
6.8k points
6 votes
the answer is 5,040 because order matters 
User Nohelia
by
6.7k points
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