mathcounts notes
The best math program for middle school students
Thursday, February 21, 2013
2013 Mathcounts State Prep : Inscribed Circle Radius and Circumscribed Circle Radius of a right triangle
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Question: \(\Delta\) ABC is a right triangle and a, b, c are three sides, c being the hypotenuse. What is a. the radius of the inscribed...
Sunday, February 10, 2013
2013 Mathcounts State Prep: Counting Problems
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Please check out Mathcounts , the best middle school competition program up to the national level. #1: 2006 Mathcounts state : My three-d...
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Wednesday, February 6, 2013
2013 Mathcounts State Prep : Angle Bisect and Trisect Questions
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Proof : 2y = 2x + b (exterior angle = the sum of the other two interior angles) --- equation I y = x + a (same reasoning as above) -...
Monday, February 4, 2013
Counting II : Practice Counting Systematically
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Counting Coins Lots of similar questions appear on Mathcounts tests. Be careful when there are limits, for example, the sum of the coins d...
2013 Mathcounts State Prep: Partition Questions
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#24 2001 Mathcounts Sate Sprint Round: The number 4 can be written as a sum of one or more natural numbers in exactly five ways: 4, 3+1, 2 ...
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