猜数字（又称 Bulls and Cows ）是一种大概于20世纪中期兴起于英国的益智类小游戏。一般由两个人玩，也可以由一个人和电脑玩，在纸上、在网上都可以玩。-Guess the number (also called the Bulls and Cows ) is a roughly in the middle of twentieth Century rise in Britain s puzzle game. Usually played by two persons, can also be composed of a person and the computer to play, in the paper, the Internet can play.