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Mathematics, 17.01.2020 14:31 rhettperkins
Acellphone/telephone keypad has keys numbered from 0 to 9 inclusive, and eight of these keys are also lettered. how many different telephone numbers are possible with this keypad, if each "number" consists of two letters followed by five numbers, where the first number is not zero?
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Acellphone/telephone keypad has keys numbered from 0 to 9 inclusive, and eight of these keys are als...
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