Clear instructions for 101 tricks and problems, many based on important math principles. Calculations have been concealed; tricks are carefully streamlined for quick understanding and flawless performance. Master such number phenomena as Lightning Calculations, Giant Memory, Magic Squares, nearly 100 more. 98 illustrations.
發表於2024-11-09
Self-working Number Magic 2024 pdf epub mobi 電子書 下載
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Self-working Number Magic 2024 pdf epub mobi 電子書 下載