x*****g 发帖数: 87 | 1 Data Sufficiency Question:
100个产品里有次品,抽出不放回,问第5次抽出来的是不合格产品的几率
1) 每25个产品里至少有1个次品
2) 首4次抽出来的产品至少有1个次品
(A)statement (1) ALONE is sufficient, but statement (2) alone is not
sufficient to answer the question asked;
(B)statement (2) ALONE is sufficient, but statement (1) alone is not
sufficient to answer the question asked;
(C)BOTH statements (1) and (2) TOGETHER are sufficient to answer the
question asked, but NEITHER statement ALONE is sufficient;
(D)EACH statement ALONE is sufficient to answer the | l*****e 发帖数: 238 | 2
什么叫每25个产品...
意思是最多只有24个正品?
【在 x*****g 的大作中提到】 : Data Sufficiency Question: : 100个产品里有次品,抽出不放回,问第5次抽出来的是不合格产品的几率 : 1) 每25个产品里至少有1个次品 : 2) 首4次抽出来的产品至少有1个次品 : (A)statement (1) ALONE is sufficient, but statement (2) alone is not : sufficient to answer the question asked; : (B)statement (2) ALONE is sufficient, but statement (1) alone is not : sufficient to answer the question asked; : (C)BOTH statements (1) and (2) TOGETHER are sufficient to answer the : question asked, but NEITHER statement ALONE is sufficient;
| x*****g 发帖数: 87 | 3 应该是吧。
【在 l*****e 的大作中提到】 : : 什么叫每25个产品... : 意思是最多只有24个正品?
| l*****e 发帖数: 238 | 4 如果你想知道第5次抽出来是次品的概率的确切数值
那就相当于你必须知道100个里面有几个次品 多了少了都不行 要确切的数值
那么两个条件都不够 同时成立也不够
【在 x*****g 的大作中提到】 : 应该是吧。
| x*****g 发帖数: 87 | |
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