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How many 3-digit number can you write with only 4 and 7?
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How many 3-digit number can you write with only 4 and 7?

User Virgiliu
by
5.2k points

1 Answer

5 votes

Answer:

8 numbers

Explanation:

447

477

474

774

744

747

777

444

User Dorki
by
5.4k points
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