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Kevin Liu is a three-time contestant at MATHCOUNTS National Competition. He was the countdown-round runner-up at the 2014 MATHCOUNTS National Competition, and the 2015 National Champion at the 2015 MATHCOUNTS National Competition. He is 14.

Mathcounts

Kevin Liu competing with Andy Xu

Kevin vs. frank mathcounts

Kevin Liu competing with Frank Han


Winning Question:Edit

"How many arithmetic progressions of six terms include the numbers 15 and 20?"

Answer:15