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In the diagram below, a portion of the number line is shown, with numb

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In the diagram below, a portion of the number line is shown, with numb [#permalink]

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New post 30 Jul 2017, 21:50
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Question Stats:

82% (01:16) correct 18% (01:37) wrong based on 41 sessions

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In the diagram below, a portion of the number line is shown, with numbers a, b, c and d marked. If none among a, b, c and d are ‘0’, is ab < cd?
Image


(1) ab > 0
(2) bd < 0

[Reveal] Spoiler:
Attachment:
2017-07-31_0949.png
2017-07-31_0949.png [ 3.08 KiB | Viewed 599 times ]
[Reveal] Spoiler: OA

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Re: In the diagram below, a portion of the number line is shown, with numb [#permalink]

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New post 31 Jul 2017, 08:44
Bunuel wrote:
In the diagram below, a portion of the number line is shown, with numbers a, b, c and d marked. If none among a, b, c and d are ‘0’, is ab < cd?
Image


(1) ab > 0
(2) bd < 0

[Reveal] Spoiler:
Attachment:
2017-07-31_0949.png


question ab < cd

stat1: two cases,,, both are positive or both negative....
if positve answer is no,, if negative the answer depends on where zero lies...
not suff..

stat2: either b or d is positive and the other is negative....
not suff to say whether ab< cd

combined...not usff

ans E...
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Re: In the diagram below, a portion of the number line is shown, with numb [#permalink]

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New post 31 Jul 2017, 11:46
Bunuel wrote:
In the diagram below, a portion of the number line is shown, with numbers a, b, c and d marked. If none among a, b, c and d are ‘0’, is ab < cd?
Image


(1) ab > 0
(2) bd < 0

[Reveal] Spoiler:
Attachment:
2017-07-31_0949.png



Stat A:
ab > 0
Either both positive: then ab < cd
Or both negative: then insufficient
hence A is insufficient

Stat B:
bd < 0
Hence b is negative, this means a is also negative: then insufficient as above

Ans: E
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In the diagram below, a portion of the number line is shown, with numb [#permalink]

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New post 31 Jul 2017, 12:20
Statement 1
Ab>0
Insufficient
Statement 2
Bd<0
Insufficient
Combined
Ab>0 and Bd<0
this implies d is negetive and cd is negetive
ab is positive (given)
Suufficient
answer (C)
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Re: In the diagram below, a portion of the number line is shown, with numb [#permalink]

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New post 31 Jul 2017, 22:55
panwala95 wrote:
Statement 1
Ab>0
Insufficient
Statement 2
Bd<0
Insufficient
Combined
Ab>0 and Bd<0
this implies d is negetive and cd is negetive
ab is positive (given)
Suufficient
answer (C)


Combining both the statements we are not getting any sign of C and hence can't conclude...
So the answer is E: both the statements are not sufficient.
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Re: In the diagram below, a portion of the number line is shown, with numb   [#permalink] 31 Jul 2017, 22:55
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In the diagram below, a portion of the number line is shown, with numb

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