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4 and 5 powered (Posted on 2019-04-12) Difficulty: 3 of 5
For some positive integer k both 4k and 5k start with the same digit x.

What are the possible values of x?

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
Solutioncomputer solutionCharlie2019-04-12 13:24:58
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