If n & p are integers, is p>0?
(1) n+1>0
(2) np>0
inequalities - numbers
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Statement Iuttara wrote:If n & p are integers, is p>0?
(1) n+1>0
(2) np>0
n+1 >0
n>-1, we dont know anything about p. Insufficient.
Statement II
np>0
n and p both can be either positive or negative. Insufficient.
Combining I & II
n>-1
np>0
We know that n and p are both integers, n can be either 0 or greater than 0, since np>0, n cannot be 0. Therefore, n>0 and p>0.
Hence C.
OA?
Last edited by parallel_chase on Mon Oct 27, 2008 9:37 am, edited 1 time in total.
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If n & p are integers, is p>0?
(1) n+1>0
(2) np>0
(1) Insuf - there is nothing about P so you can eliminate A and D
(2) Insuf - we dont know whether N is negative or positive they can be both + or both - , you can eliminate B as well
so it is either C or E
(1) + (2) - well n & p are integers and n > -1 which means N can be 0, 1, 2, .... ( positive )
and if np>0 than P needs to be + so IMO it is C
But they were not INTEGERS, N could be negative too so E would had been the answer.
and what is OA ?
(1) n+1>0
(2) np>0
(1) Insuf - there is nothing about P so you can eliminate A and D
(2) Insuf - we dont know whether N is negative or positive they can be both + or both - , you can eliminate B as well
so it is either C or E
(1) + (2) - well n & p are integers and n > -1 which means N can be 0, 1, 2, .... ( positive )
and if np>0 than P needs to be + so IMO it is C
But they were not INTEGERS, N could be negative too so E would had been the answer.
and what is OA ?
LGTCH
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