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25-02-2020
Mathematics

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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?

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amna04352 amna04352

25-02-2020

Answer:

256

Step-by-step explanation:

_ _ _ _

4 optional for every digit

4×4×4×4 = 256

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