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数学是打开科学大门的钥匙,学习数学是为了探索宇宙的奥秘.亲爱的同学,让我们共同走进大千世界,去领略一下数学的魅力吧!暑假里的一天,红红的爸爸想测试一下红红的数学思维能力,给她出了三个问题,让我们一起去看看吧.第一个问题:如何渡河爸爸说:“在一个岛上,有一些魔鬼和天使生活在一起.当魔鬼个数少于或等于天使个数时,他们可以相安无事,可是一旦魔鬼个数多于天使个数,魔鬼便会吃掉天使.这天,有3
Mathematics is the key to open the door to science, learning mathematics is to explore the mysteries of the universe. Dear students, let us enter the world together, to a taste of the charm of mathematics it! One day in summer, the red father would like to test the red Red math thinking ability, gave her out three questions, let us go and see it. The first question: how to cross the river father said: ”On an island, there are some devils and angels live together when the devil When the number is less than or equal to the number of angels, they can be at peace, but once the devil number is greater than the number of angels, the devil will eat angels.