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How many area codes (ABC) would possible if all three could be any value 1-9?
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How many area codes (ABC) would possible if all three could be any value 1-9?

User Qqilihq
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1 Answer

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1-9 = 9 numbers

so you have 9 *9 *9 = 729 different codes

User Miniver Cheevy
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