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Curiosities in Mathematics  

Demonstrate to yourself, to your friends and particularly to your grandchildren that you are interested in mathematics and that they should be too. Must there be a Friday the 13th every calendar year? How many randomly selected people in a room assures better than a 50-50 chance of a birth month-and-day match? Are all triangles isosceles? Why are some numbers "perfect" and others deficient? How many prime numbers are there? Euclid knew! We will discuss and answer these questions, more as time allows. Inquisitiveness is the only skill required. No advance reading and no homework.


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