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Does ts/k>0? (1) ts/(k^2)>0 (2) k>t+s

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Does ts/k>0? (1) ts/(k^2)>0 (2) k>t+s  [#permalink]

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New post 18 Feb 2017, 08:17
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Does \(\frac{ts}{k} >0\)?

(1) \(\frac{ts}{{k^2}} >0\)

(2) \(k > t +s\)

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Re: Does ts/k>0? (1) ts/(k^2)>0 (2) k>t+s  [#permalink]

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New post 18 Feb 2017, 11:18
ziyuenlau wrote:
Does \(\frac{ts}{k} >0\)?

(1) \(\frac{ts}{{k^2}} >0\)

(2) \(k > t +s\)


is ts and k have the same sign??
if yes then >0
if no then <0
(1) k can be positive or negative
not suff

(2) again k can be positive and t and s both negative .......we have a yes
Let K =1 , t= -2 , s= -3

also all three can be negative.......we have NO
Let k=-1 , t=-5 s= -6
insuff


combining again we can check for above two examples
insuff

Ans E
Re: Does ts/k>0? (1) ts/(k^2)>0 (2) k>t+s &nbs [#permalink] 18 Feb 2017, 11:18
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