2791脑筋急转弯中等derivationmedium
Average Radius in the Unit Disk
题目
A point is drawn uniformly from the unit disk. What is the expected distance from the point to the center?
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案
题目
A point is drawn uniformly from the unit disk. What is the expected distance from the point to the center?
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案