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斐波那契是中世纪意大利杰出的数学家,下面的这则“苹果问题”据说就是他出的:一个人经过7道门进入苹果园,摘了许多苹果。离开果园时,
Fibonacci was a distinguished Italian mathematician of the Middle Ages. The following “apple problem” is said to have been made by him: a man went through seven doors into the apple orchard and picked many apples. When leaving the orchard,