GRE數(shù)學(xué)基本概念及實(shí)例解析(八).

　　GRE數(shù)學(xué)考試在新GRE考試當(dāng)中增加了一些難度，但是考生也不要太緊張，只要把一些GRE數(shù)學(xué)基本概念掌握好，解題時(shí)就一定能輕松應(yīng)對(duì)。

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　　獨(dú)立重復(fù)試驗(yàn)的概率

　　例題.某種天氣預(yù)報(bào)準(zhǔn)確率80%，連續(xù)預(yù)報(bào)7次，其中有6次準(zhǔn)確的概率是多少?

　　賠率odds

　　例題.The odds in favor of winning a game can be found by computing the ratio of the probability of winning to the probability of not winning. If the probability that Team X will win a game is 5/8, what are the odds that Team X will win the game?

　　A.5 to 3

　　B.3 to 8

　　C.3 to 5

　　D.5 to 8

　　E.8 to 3

　　例題.Of the books in a certain room, 50 are written in German, 65 are in Chinese, 120 are in Japanese, 50 are in French, and 150 are in English. If those books are removed randomly from the room, how many must be removed to ensure that 80 of the books removed are written in the same language?

　　A.80

　　B.81

　　C.159

　　D.285

　　E.324

　　例題.Each of the integers from 10 to 19, inclusive, is written on a separate piece of paper and the ten piece are put into a box. If the pieces are then drawn the numbers on two of the pieces drawn will have a sum of 30?

　　A.3

　　B.4

　　C.5

　　D.6

　　E.7

　　平時(shí)，建議大家一定要注意GRE數(shù)學(xué)基本概念的加強(qiáng)理解，因?yàn)闊o(wú)論GRE數(shù)學(xué)考試怎樣的題目都是從最基本的概念中演變而來(lái)的。