Problem 51570. Count numbers whose reciprocals' decimal expansions terminate

Some numbers (such as 4) have reciprocals with terminating decimal expansions, while others (such as 7) do not. Write a function that counts the numbers less than or equal to the input number whose reciprocals have terminating decimal expansions. For example, given 10, your function should return a count of 6, which corresponds to 1, 2, 4, 5, 8, and 10.

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80.77% Correct | 19.23% Incorrect
Last Solution submitted on Apr 10, 2023

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