#485. 打靶问题
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ID: 485
Type: Default
1000ms
128MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
paxlumen
Tags> 打靶问题
No submission language available for this problem.
说明
•一个射击运动员打靶，靶一共有10环，连开10枪打中90环的可能性有多少种？
样例