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幼儿园一老师带着7名小朋友,她让6个小朋友围成一圈坐在操场上,让另一名小朋友坐在中央。老师拿出7块头巾,其中4块是红色,3块是黑色。然后蒙住7个人的眼睛,把头巾包在每一个小朋友的头上。再解开周围6个人的眼罩,由于中央小朋友的阻挡,每个人只能看到5个人头上头巾的颜色。这时,老师说:“你们现在猜一猜自己头上头巾的颜色。”大家思索了好一会儿,最后,坐在中央的被蒙住双眼的小朋友说:
Kindergarten teacher with seven children, she let six children in a circle sitting in the playground, so that another child sitting in the middle of the children. The teacher took out seven headscarves, of which four were red and three were black. Then blindfolded the eyes of seven people, the scarf wrapped in the head of each child. Then untied six people around the blindfold, due to the central children blocked, each person can only see the color of the headscarf of five people. At this moment, the teacher said: “You now guess the color of your headscarf.” Everybody thought for a moment, and finally, sitting in the middle of the blindfolded children said: