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# 5 numbers mprts>0, which of the following must be true?

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Manager
Joined: 20 Sep 2004
Posts: 62
Followers: 1

Kudos [?]: 3 [0], given: 0

5 numbers mprts>0, which of the following must be true?  [#permalink]  24 Nov 2004, 07:29
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5 numbers mprts>0, which of the following must be true?

I. mp>0
II. rt>0
III. ts>0
Director
Joined: 31 Aug 2004
Posts: 610
Followers: 3

Kudos [?]: 50 [0], given: 0

The stem looks awkward...

Either they are all >0
or 2 of them are <0 I or II or III is necessary
or 4 of them are <0 (I+II) or (I+III) or (II+III) is necessary
Director
Joined: 03 Nov 2004
Posts: 867
Followers: 1

Kudos [?]: 19 [0], given: 0

mprts > 0
so this could be, m(-p)r(-t)s > 0
hence none of the statements can be true.
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