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Row and Columns Sums

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Published on Apr 20, 2014

James Tanton takes viewers through this question from the 2009 MAA AMC 8 Competition. Appropriate for the middle-school grade levels, this question covers counting methods.

Read the Curriculum Burst essay that goes with this question here: http://bit.ly/1liaZPc (PDF).

Read the Strategy Essay for this Question http://www.maa.org/node/129116/

Curriculum Inspirations is brought to you by the Mathematical Association of America and the MAA American Mathematics Competitions. Learn more here: http://www.maa.org/curriculum-inspira...

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