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CEMC Gauss (Grade 8), 1998

Combinatorics Difficulty 1.0 Junior Find the answer Canada

The pattern of figures △∙□▲◯\triangle\bullet\square\blacktriangle\bigcirc is repeated in the sequence △,∙,□,▲,◯,△,∙,□,▲,◯,…\triangle,\bullet,\square,\blacktriangle,\bigcirc,\triangle,\bullet,\square,\blacktriangle,\bigcirc,\ldots. The 214th figure in the sequence is

(A) △\triangle (B) ∙\bullet (C) □\square (D) ▲\blacktriangle (E) ◯\bigcirc

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