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You are given four different non-zero digits, for example: 2, 5, 7 and 8. How many four digit numbers can be formed from your four given digits if digits can be used more than once?

User Blythe
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1 Answer

3 votes

Answer:

256

Explanation:

_ _ _ _

4 optional for every digit

4×4×4×4 = 256

User Josh Parnell
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