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UKMT Grey Kangaroo, 2021

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

The positive integer NN is the smallest one whose digits add to 41. What is the sum of the digits of N+2021N+2021?

(A) 1010 (B) 1212 (C) 1616 (D) 20212021 (E) 40424042

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