Hi all
In continuation to my previous post another MGMAT tough question - involving absolute value, for more than one variable.
What exactly is the takeaway, and how to solve these types, variety of ways welcomed - help please.
Is |a| + |b| > |a + b| ?
(1) a^2 > b^2
(2) |a| × b < 0
OA below
OA -E
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another mgmat toughie -absolute value on both sides
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maihuna
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|a| + |b| > |a + b| means a and b are of opposite sign as otherwise they should equal.
1. a^2 > b^2 nothing can be deduced about the sign of a and
2. since |a| > 0 |a|*b<0=> b<0 we still do not know whether a>0 or <0 so not suff
combining also nothing can be deduced abt sign of a and b so E.
1. a^2 > b^2 nothing can be deduced about the sign of a and
2. since |a| > 0 |a|*b<0=> b<0 we still do not know whether a>0 or <0 so not suff
combining also nothing can be deduced abt sign of a and b so E.
kaps786 wrote:Hi all
In continuation to my previous post another MGMAT tough question - involving absolute value, for more than one variable.
What exactly is the takeaway, and how to solve these types, variety of ways welcomed - help please.
Is |a| + |b| > |a + b| ?
(1) a^2 > b^2
(2) |a| × b < 0
OA below
OA -E
Charged up again to beat the beast 
