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Problem 36 Double-base palindromes

华为实习生面试归来

阿里实习生笔试归来

Problem 35 Circular primes

Problem 34 Digit factorials

Problem 33 Digit canceling fractions

Problem 32 Pandigital products

Problem 31 Coin sums

Problem 30 Digit fifth powers

Problem 29 Distinct powers

Problem 28 Number spiral diagonals

Problem 27 Quadratic primes

Problem 26 Reciprocal cycles

Problem 25 1000-digit Fibonacci number

Problem 24 Lexicographic permutations