Numerical Brain Teasers: Exercise Your Mind by Erica Sadun

Numerical Brain Teasers: Exercise Your Mind

Erica Sadun

170 pages missing pub info (editions)

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Challenge your brain with math! Using nothing more than basic arithmetic and logic, you'll be thrilled as answers slot into place. Whether purely for fun or to test your knowledge, you'll sharpen your problem-solving skills and flex your mental mu...

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