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Evened N and 3N (Posted on 2019-05-18) Difficulty: 4 of 5
How many 3 digit numbers N are there such that the digits of N and 3N are all even? (There is no restriction on the number of digits of 3N)

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
Solutioncomputer solutionCharlie2019-05-18 14:07:48
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