Critical thinking and number sense based math problems to challenge students of all grade levels. Most of these problems require more critical thinking and less number crunching than typical textbook math problems. Check back 5 days per week for a new problem.
Tuesday, August 24, 2010
6th - 12th grade
Factorial (!) means to multiply by every positive number equal to or lower than the given number. For example, 5! 5x4x3x2x1=120.
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