goan81 Posted September 9, 2007 Share Posted September 9, 2007 Is m+z>0 1). m-3Z>0 2). 4z-m>0 Quote Link to comment Share on other sites More sharing options...
Name User Posted September 9, 2007 Share Posted September 9, 2007 is m+z positive? (1) m>3z m=1, z=-2, => 1-2=neg m=2 z=.5 => 2-.5=pos insufficient. (2) 4z>m z=-1 m=-5 -5+-1=neg z=1, m=.5 .5+1=pos insufficient 1 and 2 combined, you get following inequality. 3z C Quote Link to comment Share on other sites More sharing options...
goan81 Posted September 11, 2007 Author Share Posted September 11, 2007 OA is C. Thanks. Quote Link to comment Share on other sites More sharing options...
CrackXam Posted September 13, 2007 Share Posted September 13, 2007 Another vote for C. for m+z>0, both must be +ve or lml > lzl and m must be +ve. From stmnt 1 we get to know that m is +ve. stmnt II states z is +ve. So, C! Quote Link to comment Share on other sites More sharing options...
nikiforos Posted September 19, 2007 Share Posted September 19, 2007 Another vote for C Quote Link to comment Share on other sites More sharing options...
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