cruz8259 cruz8259

06-07-2019
Mathematics

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How many phone numbers can be made if the rst digit must be 1, the second digit must be a number in the range 3-5, the third digit must be a number in the range (6-9), and the last seven digits can be any single digit number 0-9?

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konrad509 konrad509

06-07-2019

[tex]1\cdot3\cdot4\cdot10^7=120,000,000[/tex]

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