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26 August, 12:13

The numeral 47 in base a represents the same number as 74 in base b. assuming both bases are positive integers, what is the least possible value of a+b written in base 10?

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  1. 26 August, 14:57
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    Both numbers have to be at least in base 8, so the least value of a+b is 8+8=16.
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