2 MATHCOUNTS Questions: Solve Either one or even both to get best answer!!!

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198. How many positive integers have the same digits in the same order when written in base 7 and in base 13?

200. If 2015 + a = b for positive integers a and b, both of which are palindromes, what is the smallest possible value of a?

Apr 19th, 2015

198.  answer 6: namely 1, 2, 3, 4, 5,, 6

after that they become 10 (base 7) but 8 (base 13)


Apr 19th, 2015

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Apr 19th, 2015
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Apr 19th, 2015
Jun 22nd, 2017
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