注目の話題: わたしが悪いですか？; 友人に裏切られ、どう対応して良いのか分かりません。; ホームランボールは小さな子供に譲るべきなの？？

Science,English,and math Ⅱ

No.141　18/02/10 10:31
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【It is said that a poor hit will shoot the marke if he tries often enough,but is it true?】

《As to an issue on at least,it becomes easy if thinking complementary events.》

When thinking of a single phenonenon,there are other phenomena,and we call the other ones complementary events. The probability of being unable to pass the entrance exam for each school is 1ーthe percentage of being able to pass the entrance exam.

When it's 0.7, 0.6, 0.5, 0.4, and 0.4,so the probability of being unable to pass the entrance exam for all the schools is 0.7×0.6×0.5×0.4×0.4=0.0336. When passing the entrance exam for at least one school,it's all right as long as the one doesn't pass all the entrance exam for 5 schools,1ー0.0336=0.9664,it's the probability for being able to pass the entrance exam.

Its almost close to 1,so I'm sure it is certain the one can pass the entrance exam at least 5 of 1. We come across the situation in which we say at least in various affairs.