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Mathematics, 22.09.2020 16:01 railuke7721
Some credit card numbers have special digits. Suppose a card's number must start with 37 followed by a nonzero digit. Then the 13 following digits can be any number from 0 to 9. How many different credit numbers are possible?
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Some credit card numbers have special digits. Suppose a card's number must start with 37 followed by...
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