Mathematics, 28.03.2020 18:40 arod20061

Sam wrote all the integers from 250 to 500 in a row. Margaret replaced each of these numbers with the sum of its digits. Sam replaced each of Margaret's numbers with the sum of its digits. This continued until only one-digit natural numbers remained. At the end, which one-digit natural number is written the least number of times?

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Sam wrote all the integers from 250 to 500 in a row. Margaret replaced each of these numbers with th...