Free Download Ivan Moscovich, "Strain-Your-Brain: Power Puzzles"
English | ISBN: 1402739699 | 2006 | 251 pages | PDF | 14 MB
Dassling Mathematical Challenges Compiled by One of the Top Puzzle Makers in the World Looking for a little intellectual stimulation? A chance to prove your mental superiority? Each brain-baffling puzzle and game in this collection is fun and will test your math skills in the most demanding and satisfying way. Can you finish them all?