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Birthday Probability

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Author: Kristina Lasher & Lisa Lavelle
Description: teacher support active problem Math Fundamentals, difficulty level 3. What is the likelihood that someone is born on an even or odd day of the month? Are you more likely to be born on a prime number day or a multiple of 3?
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Problem page: http://mathforum.org/librarypow/puzzles/index2.ehtml?puzzle=3103
Support page: http://mathforum.org/pow/support/funpow/20040308fun.teacher.html
Solution page: Problem #3103

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