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Number theory Difficulty 2.0 Junior Find the answer United Kingdom

We will call a two-digit number power-less if neither of its digits can be written as an integer to a power greater than 11. For example, 5353 is power-less, but 5454 is not power-less since 4=224 = 2^2. Which of the following is a common divisor of the smallest and the largest power-less numbers?

(A) 33 (B) 55 (C) 77 (D) 1111 (E) 1313

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