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During archery practice, Kyle made 50 attempts to hit a target. After each attempt, his success rate was calculated as the number of successful attempts to hit the target as a percent of the number of attempts up to that time. After the 20th attempt, his success rate was 45 percent. After the 40th attempt, his success rate was 55 percent. Which of the following statements must be true?
Indicate all such statements.
Indicate all such statements.
B显示答案
· 相关考点
3.5.2 常用特殊不等式
3.5.2 常用特殊不等式
以上解析由 考满分老师提供。
