{"product_id":"2940154370247","title":"More Than 200 Recreational Mathematics Problems","description":"\u003cp\u003eOpening boxes, running down an up escalator, swimming lengths, using a map print side down, a circular billiard table, cropping paper, the geometry of perspective, calculus-free optimisation – you’ll find this and much more in these 274 problems. To tackle them all you’ll need a clear logical mind and familiarity with basic algebra, geometry, trigonometry, probability, equations of motion under constant acceleration and elementary differentiation. Many of the problems will be clearer if a diagram of some sort is drawn. There is no purist assumption that you'll tackle all of them only by pencil and paper methods or by pure cerebration – some kind of computer search may well be preferable, or even necessary, in some cases. Minimal numerical\/descriptive solutions are given at the end but no detailed working, in the hope that you’ll find the journey as interesting as the destination.\u003c\/p\u003e\u003cp\u003eThe aim of this ebook is simple - to give those of you who like this sort of thing a lot of mathematical entertainment and interest. The cost is modest, the cost per problem is tiny and quite a bit can be seen without charge anyway.\u003c\/p\u003e","brand":"Ian Duff","offers":[{"title":"Default Title","offer_id":47076318707952,"sku":"2940154370247","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940154370247_p0.jpg?v=1764066033","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940154370247","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}