10．（5分）从区间 $[0,1]$ 随机抽取 2 n 个数 $\mathrm{x}_{1}, \mathrm{x}_{2}, \ldots, \mathrm{x}_{\mathrm{n}}, \mathrm{y}_{1}, \mathrm{y}_{2}, \ldots, \mathrm{y}_{\mathrm{n}}$ 构成 n个数对 $\left(x_{1}, y_{1}\right),\left(x_{2}, y_{2}\right) \ldots\left(x_{n}, y_{n}\right)$ ，其中两数的平方和小于 1 的数对共有 m 个，则用随机模拟的方法得到的圆周率 $\pi$ 的近似值为（）
概率综合 · 历年高考数学真题与解析
本页汇总 高考真题检索 的「概率综合」高考数学真题共 2 道，覆盖 2013–2016 年，最常出题型为 单选题；含完整答案与解析。
2questions
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2013–2016
Years covered
区分题为主
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Single-choice
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11．利用计算机产生 $0 \sim 1$ 之间的均匀随机数 $a$，则事件 ‘ $3 a-1<0$，的概率为 $\_\_\_\_$
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