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Combinatorics Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

Pierre writes all the numbers from 1 to 20 in a row and obtains the 31-digit number $1234567891011121314151617181920$ . He then deletes 24 of the 31 digits so that the remaining number is as large as possible. Which number does he get?

(A) $9671819$ (B) $9567892$ (C) $9781920$ (D) $9912345$ (E) $9818192$

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