Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.
-Michael Davis, Mathematics Teacher, November 2012
This is a perfectly delightful book which will provide many hours of pleasure to the mathematically inclined child or adult. It would be a nice birthday present, for example.
-Norman R. Draper, International Statistical Review, 2012
Train Your Brain is an enjoyable way to exercise your brain and spend a few spare minutes during the day. While this collection of math and logic puzzles vary in depth and complexity, they are certainly challenging enough to keep anyone engaged. I found the structure of Grätzer's book to be particularly appealing. ... I really enjoyed solving and attempting to solve the puzzles presented in this book. ... most could be solved by anyone froman advanced high school student to a college student with a solid background in mathematics. There is something for everyone in this book.
-Janet Shiver, MAA Reviews, February 2012