Contains 90 puzzles selected to increase your problem-solving powers. They include cryptarithms, asphmetics, simultaneous equations and layered thinking - more advanced puzzles than average, challenging you to replace letters with digits, break codes and much more. Answers are included.
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Contains 90 puzzles selected to increase your problem-solving powers. They include cryptarithms, asphmetics, simultaneous equations and layered thinking - more advanced puzzles than average, challenging you to replace letters with digits, break codes and much more. Answers are included.
Read Less
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Seller's Description:
Very good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority!
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Seller's Description:
Very Good. Very Good condition. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp.
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Seller's Description:
Very good. A copy that has been read, but remains in excellent condition. Pages are intact and are not marred by notes or highlighting, but may contain a neat previous owner name. The spine remains undamaged. An ex-library book and may have standard library stamps and/or stickers. At ThriftBooks, our motto is: Read More, Spend Less.
