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古典兔子问题
- 有一对兔子,从出生到第三个月起每个月都生一对兔子,小兔子长到第三个月后每一对又生一对兔子,加入兔子不死问每个月的兔子总数为多少(A pair of rabbits gave birth to a pair of rabbits every month from birth to third months. When the rabbit grew to third months, each pair gave birth to a pair of rabbits.)