题目

Q1:
What is the probability that event E or event F or both will occur?
(1) The probability that event E will occur is 0.6.
(2) The probability that event F will occur is 0.4.
A.Statement (1) ALONE is sufficient,but statement (2) alone is not sufficient.
B.Statement (2) ALONE is sufficient,but statement (1) alone is not sufficient.
C.BOTH statements TOGETHER are sufficient,but NEITHER statement ALONE is sufficient.
D.EACH statement ALONE is sufficient.
E.Statements (1) and (2) TOGETHER are NOT sufficient
Q2:
Last year in a group of 30 businesses,21 reported a net profit and 15 had investments in foreign markets.How many of the businesses did not report a net profit nor invest in foreign markets last year?
(1) Last year 12 of the 30 businesses reported a net profit and had investments in foreign markets.
(2) Last year 24 of the 30 businesses reported a net profit or invested in foreign markets,or both.
A.Statement (1) ALONE is sufficie

提问时间：2021-03-23

答案

Q1：概率 - 互斥事件与独立事件　　the probability that event E or event F or both will occur实质上就是问P(E∪F)的值       Statement (1)：Insufficient　　Statement (2)...