Brain Maths is a series of 2 volumes which contain a wide selection of mathematical and logical problems that help one to develop one's critical and logical thinking skills. Brain Maths aims not only to increase one's IQ power, but also to develop one's mental flexibility. More than 100 challenging problems are included. Brain Maths 2 is recommended for ages 11 & up. Answers are provided in the back of the book. 152 pages, softcover.
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