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Number theory Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

Carl wrote a list of 10 distinct positive integers on a board. Each integer in the list, apart from the first, is a multiple of the previous integer. The last of the 10 integers is between 600 and 1000. What is this last integer?

(A) 640640 (B) 729729 (C) 768768 (D) 840840 (E) 990990

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