Kỹ thuật Good old-fashioned Challenging Puzzles - H.E. Dudeney

Thảo luận trong 'Sách tiếng nước ngoài' bắt đầu bởi 1953snake, 7/3/15.

  1. 1953snake

    1953snake Lớp 12


    Contains mathematical brain teasers, first published in 1917, as the puzzles regularly appeared in newspapers and magazines. This book includes new twists on old puzzles, as well as other puzzles - some reasonably easy and others very hard.

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