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Combinatorics Difficulty 1.0 Junior Find the answer United Kingdom

Selina takes a sheet of paper and cuts it into 10 pieces. She then takes one of these pieces and cuts it into 10 smaller pieces. She then takes another piece and cuts it into 10 smaller pieces and finally cuts one of the smaller pieces into 10 tiny pieces. How many pieces of paper has the original sheet been cut into?

(A) $27$ (B) $30$ (C) $37$ (D) $40$ (E) $47$

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