Q1:
WhatistheprobabilitythateventEoreventForbothwilloccur?
(1)TheprobabilitythateventEwilloccuris0.6.
(2)TheprobabilitythateventFwilloccuris0.4.
A.Statement(1)ALONEissufficient,butstatement(2)aloneisnotsufficient.
B.Statement(2)ALONEissufficient,butstatement(1)aloneisnotsufficient.
C.BOTHstatementsTOGETHERaresufficient,butNEITHERstatementALONEissufficient.
D.EACHstatementALONEissufficient.
E.Statements(1)and(2)TOGETHERareNOTsufficient
Q2:
Lastyearinagroupof30businesses,21reportedanetprofitand15hadinvestmentsinforeignmarkets.Howmanyofthebusinessesdidnotreportanetprofitnorinvestinforeignmarketslastyear?
(1)Lastyear12ofthe30businessesreportedanetprofitandhadinvestmentsinforeignmarkets.
(2)Lastyear24ofthe30businessesreportedanetprofitorinvestedinforeignmarkets,orboth.
A.Statement(1)ALONEissufficient,butstatement(2)aloneisnotsufficient.
B.Statement(2)ALONEissufficient,butstatement(1)aloneisnotsufficient.
C.BOTHstatementsTOGETHERaresufficient,butNEITHERstatementALONEissufficient.
D.EACHstatementALONEissufficient.
E.Statements(1)and(2)TOGETHERareNOTsufficient.
第一题答案为E,第二题答案为D.
第一题为什么不选C我觉得应该是0.4+0.6+0.4*0.6