Tau Beta Pi is a national honor society for engineering students, and its quarterly Brain Ticklers online feature is a true challenge aimed at motivated individuals. In each issue, five standard questions and two bonus questions are given, which are intended to exercise peoples' problem solving skills. The problems are generally straightforward and easy to understand, but they can be extremely perplexing to solve. People who attempt the problems are encouraged to submit their answers for possible recognition in the following issue. Answers to the previous issue's problems are included when new issues are published.
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