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Mathematics, 24.07.2019 10:00 hilljade45

To use an automated teller machine at a certain bank, you must enter a 55-digit code, using the digits 1 dash 91–9. how many 55-digit codes are possible if repetition of digits is permitted?

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To use an automated teller machine at a certain bank, you must enter a 55-digit code, using the digi...
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