Mind-blowing conundrums that will sharpen your thinking skills. These fascinating, brilliantly colorful puzzles will strain your brain and dazzle you visually. The picture challenges have a trick to fool you: from vivid optical illusions to 3-D effects. Some problems require a little math but before doing the arithmetic, you ll have to figure out the logic underlying the question.
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Book Description Sterling Publishing. PAPERBACK. Book Condition: New. 1402721951. Bookseller Inventory # Z1402721951ZN
Book Description Sterling Publishing 2004-04-28, 2004. Paperback. Book Condition: New. Pages are clean and unmarked. Bookseller Inventory # 110129
Book Description Sterling, 2004. Trade paperback. Book Condition: New. 352 p. Trade paperback (US). Glued binding. Bookseller Inventory # Alibris_0018054