Everyday Einstein – 10.11.10 – Martin Gardner Monday!

We’re just 11 days away from our event on October 21 at the Brookline Senior Center.


From My Best Mathematical and Logic Puzzles:

“An absent-minded bank teller switched the dollars and cents when he cashed a check for Mr. Brown, giving him dollars instead of cents, and cents instead of dollars. After buying a 5-cent newspaper, Brown discovered he had left exactly twice as much as his original check. What is the amount of the check?”



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