扑克牌游戏是一种大众化的娱乐游戏,其中有一类扑克牌游戏表面上是精彩纷呈的玩耍,其实质玩的是数学的思想和方法,玩的是数学准确计算与严密推理等.本文以扑克牌游戏为例,引领读者感受数学的魅力.题目桌上有a张正面朝上的扑克牌,每次翻转其中任意b(a≥b,a、b∈Z_+)张,使它们一面朝上变成另一面朝上,这样的操作一直做下去. Poker game is a kind of popular entertainment game. There is a kind of playing card game on the surface which is a colorful play. Its essence is the mathematics thoughts and methods, playing with the mathematical calculation and strict reasoning, etc. The game of cards, for example, leads the reader to feel the charm of mathematics. There is a face-up poker card on the title table. Each time flips any of them b (a≥b, a, b∈Z_+), so that they face each other. On the other side up, this operation has been going on.