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Lexington Middle Schooler Wins National Math Competition

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Raytheon Chairman and CEO William H. Swanson (left) congratulates Alec Sun, an 8th-grader from Lexington, Mass., and his coach Joshua Frost, for capturing the 2013 Raytheon MATHCOUNTS National Champion title. The competition brings together 224 top middle school Mathletes from across the United States. (PRNewsFoto/Raytheon Company)

Raytheon Chairman and CEO William H. Swanson (left) congratulates Alec Sun, an 8th-grader from Lexington, Mass., and his coach Joshua Frost, for capturing the 2013 Raytheon MATHCOUNTS National Champion title. The competition brings together 224 top middle school Mathletes from across the United States. (PRNewsFoto/Raytheon Company)

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BOSTON (AP) — A Lexington, Mass., middle school student has won a national math competition in Washington with the right answer to a question about integers.

Alec Sun won the 2013 Raytheon MATHCOUNTS National Competition on Friday by answering in less than 45 seconds what the greatest integer is that must be a factor of the sum of any four consecutive positive odd integers. He correctly answered eight.

An integer is a positive or negative number that does not include fractions or decimals.

The eighth-grader from Jonas Clarke Middle School competed among 224 middle school students.

In the team competition, Massachusetts won the National Team Championship for the second year in a row.

Sun won an $8,000 college scholarship and a trip to U.S. Space Camp in Huntsville, Ala.

Copyright 2013 The Associated Press.

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