Home Competitions AMC 10 2022a Problem 17
How many three-digit positive integers a ‾ b ‾ c ‾ \underline{a} \ \underline{b} \ \underline{c} a b c are there whose nonzero digits a , b , a,b, a , b , and c c c satisfy
0. a ‾ b ‾ c ‾ ‾ = 1 3 ( 0. a ‾ + 0. b ‾ + 0. c ‾ ) ? 0.\overline{\underline{a}~\underline{b}~\underline{c}} = \frac{1}{3} (0.\overline{a} + 0.\overline{b} + 0.\overline{c})? 0. a b c = 3 1 ( 0. a + 0. b + 0. c )?
(The bar indicates repetition, thus 0. a ‾ b ‾ c ‾ ‾ 0.\overline{\underline{a}~\underline{b}~\underline{c}} 0. a b c is the infinite repeating decimal 0. a ‾ b ‾ c ‾ a ‾ b ‾ c ‾ ⋯ 0.\underline{a}~\underline{b}~\underline{c}~\underline{a}~\underline{b}~\underline{c}~\cdots 0. a b c a b c ⋯ )
(A) 9 (B) 10 (C) 11 (D) 13 (E) 14 \textbf{(A) } 9 \textbf{(B) } 10 \textbf{(C) } 11 \textbf{(D) } 13 \textbf{(E) } 14 (A) 9 (B) 10 (C) 11 (D) 13 (E) 14
Dataset text NuminaMath-1.5 . Quoted with source.
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