Puzzled: Solutions and Sources
Last month (May 2013) we posed a trio of brainteasers concerning Ant Alice and her ant friends who always march at 1 cm/sec in whatever direction they are facing, reversing direction when they collide.
Peter Winkler
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Puzzled: Solutions and Sources
Last month (February 2013) we posed a trio of brainteasers concerning probability and dice. Here, we offer solutions to all three. How did you do?
Puzzled: Solutions and Sources
Last month (November 2012) we posted a
trio of brainteasers
concerning the use of a balance scale to determine the weight of various numbers of coins. Here, we offer solutions to all three. How did you do?
Puzzled: Weighed in the Balance
Many of us have pondered puzzles involving a set of n coins and a balance scale. Here we take a slightly different tack: a set of coins and a balance scale that can tell us which of two sets of coins is heavier or that they are of equal weight.
Puzzled: Solutions and Sources
Last month (August 2012) we posted a
trio of brainteasers
concerning "magic sets." Here, we offer solutions to all three. How did you do?
Welcome to three new puzzles. Each involves a collection of items, and your job is to find a subset of them that is characterized by a particular property.
Puzzled: Solutions and Sources
Last month (May 2012) we posted a trio of brainteasers concerning designs on square grids. Here, we offer solutions to all three. How did you do?
Puzzled: Designs on Square Grids
Welcome to, as usual, three new puzzles. However, unlike previous columns, where solutions to two were known (and included in the related Solutions and Sources in the next issue), this time expect to see solutions to all three in June.
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