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by turbo jet » Wed Jun 10, 2009 7:47 am
Original IMO:B
Revised IMO:C
Second revised IMO: B again (After tohellandback's revelation)

Possible scenarios are

a. All are red. No green
b. All are green. No red
c. Some are red. Some are green

I: Correct because of a above
II: Correct because it is the contrapositive of the first statement of the argument
III: Incorrect. False contrapositive

OA please!!

Cheers!!
Turbo Jet

:) :) :)
Last edited by turbo jet on Thu Jun 11, 2009 4:51 am, edited 3 times in total.
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by Kenen750 » Thu Jun 11, 2009 12:18 am
OA is "C"....
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by tohellandback » Thu Jun 11, 2009 1:02 am
IMO B,
How can I be true. The awnings can either be red or green. Now it is possible that all of them are red. so It is not a MUST that some awnings are green
The powers of two are bloody impolite!!
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by turbo jet » Thu Jun 11, 2009 3:11 am
Sorry guys, there was a silly mistake in the inferences drwan above although the logic is correct. Have rectified the error.

Confirmed answer C

tohellandback: Please refer to possible scenarios in the post above for why Fact I is correct.

Cheers!!!


:)
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by tohellandback » Thu Jun 11, 2009 4:38 am
turbo jet,
I still think I is false. The awnings can either be red or green. What if all the awnings are red. Now it is not a MUST that some awnings are green.
so I is not necessarily true
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by scoobydooby » Thu Jun 11, 2009 4:46 am
googled on this question, the OA is given to be B in other forums
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by turbo jet » Thu Jun 11, 2009 4:48 am
tohellandback wrote:turbo jet,
I still think I is false. The awnings can either be red or green. What if all the awnings are red. Now it is not a MUST that some awnings are green.
so I is not necessarily true
Correct tohellandback,

I agree with your logic.
My thinking cells are back in action again I guess!!!

Thx for the new revelation.

Forum members please throw some more light on on Option I validity.

Cheers!!
TJ


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by turbo jet » Thu Jun 11, 2009 4:52 am
scoobydooby wrote:googled on this question, the OA is given to be B in other forums
Thx buddy!!!
I am now quite sure its B
Thanks tohellandback :)

Thanks scoobydooby for taking the effort to find the rt answer!!!1

Cheers
TJ :D
Last edited by turbo jet on Thu Jun 11, 2009 4:58 am, edited 1 time in total.
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by turbo jet » Thu Jun 11, 2009 4:53 am
Kenen750 wrote:OA is "C"....
Hi kenen,

Could you please confirm ur answer.
Thnks

TJ
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by Domnu » Thu Jun 11, 2009 2:58 pm
The answer most definitely CANNOT be C. Here's why:

All the prompt states is that all houses on main street have awnings, each of which are EITHER green or red.

Look at the following diagram (each x is a house). Suppose that there are 3 houses on main street:

X X X
red red red

Does this main street satisfy the three requirements:

Each house has an awning (yes)
Each house has either a green or red awning (yes)

But oh no! There aren't any green awnings! So, I cannot be correct.

However, choice II is correct because of the https://en.wikipedia.org/wiki/Contrapositive.
Have you wondered how you could have found such a treasure? -T
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by james33 » Sun May 15, 2016 7:40 pm
B seems to be the best choice here
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