|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||5 days ago||34.7||$21.09||You save $13.61|
|Amazon US||1 days ago||27.06||$21.09||You save $5.97|
Ian Stewart, an active popularizer of mathematics, university professor, and former columnist for Scientific American's "Mathematical Games" column.
"Ian Stewart's quirky humor and imaginative story telling entice readers into a fascinating world of mathematical curiosities and mind-tickling puzzles."