The circle is symmetric, so place one point anywhere and ask whether the other three land in the same semicircle. Each of those 3 points independently has a 1/21/21/2 chance of landing in that half, so the probability should be (1/2)3=1/8=12.5%(1/2)^3 = 1/8 = 12.5\%(1/2)3=1/8=12.5%.
func (*Option) ArgFloat64 ¶
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Gareth, 31, was helped into accommodation six months ago.
没有套路，全是知识的平台来了丨三好学喵
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Зеленскому стали чаще желать смерти02:42
«Моссад» провел ночную наземную операцию в ИранеAl-Arabiya: Моссад провел ночную наземную операцию в Иране。夫子对此有专业解读