sherneiljshawn sherneiljshawn

03-10-2016
Mathematics

contestada

How many seven-digit numbers are there when 0 , 7 , and 2 cannot be the leading number?

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CuriousCompass CuriousCompass

08-10-2016

9,000,000
-2,000,000 (1,000,000 for each of the numbers taken out except 0, a number 7,000,000 can't start with 0 unless it is 0 or a decimal.)

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