<p><img align="right" alt="" src="/admin/../upload/pimg1139_1.gif" /></p> <h2>Problem E: Faucet Flow</h2> <p>A faucet is pouring water into a long, thin aquarium with various vertical dividers (walls) in it. The aquarium is …

<p>Two players, Stan and Ollie, play, starting with two natural numbers. Stan, the first player, subtracts any positive multiple of the lesser of the two numbers from the greater of the two numbers, provided that the resulting number must be nonnegative.…

<p><img align="right" src="/admin/../upload/pimg1138_1.gif" alt="" /></p> <h2>Problem D: Blocks</h2> <p>Donald wishes to send a gift to his new nephew, Fooey. Donald is a bit of a traditionalist, so he has chosen to send a s…

<p><img align="right" src="/admin/../upload/pimg1137_1.jpg" alt="" /></p> <h2>Problem C: Square</h2> <p>Given a set of sticks of various lengths, is it possible to join them end-to-end to form a square?</p> <p>Th…

<p><img align="right" src="/admin/../upload/pimg1135_1.jpg" alt="" /></p> <h2>Problem A: Trains</h2> <p>Trains are cool. You can get pretty much anywhere in Europe on a train, including little towns. In Canada, train service…

<p><img align="right" src="/admin/../upload/pimg1136_1.jpg" alt="" /></p> <h2>Problem B: Tic Tac Toe</h2> <p>Tic Tac Toe is a child's game played on a 3 by 3 grid. One player, X, starts by placing an X at an unoccupied grid …