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In a single row of yellow, green and red colored tiles,

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Senior Manager
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In a single row of yellow, green and red colored tiles, [#permalink] New post 11 Mar 2008, 08:10
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A
B
C
D
E

Difficulty:

  5% (low)

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
In a single row of yellow, green and red colored tiles, every red tile is preceded immediately by a yellow tile and every yellow tile is preceded immediately by a green tile. What color is the 24th tile in the row?

(1) The 18th tile in the row is not yellow.

(2) The 19th tile in the row is not green.
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Re: DS - MGMAT question - Row of tiles [#permalink] New post 11 Mar 2008, 10:56
Question says RYG should in sequence but does not say that G should be followed by Red or Yellow.

Statement 1:
The 18th tile in the row is not yellow.
May mean 18th tile is Red or Green so not sufficient.

Statement 2:
The 19th tile in the row is not green.
May mean 19th tile is Red or Yellow so not sufficient.

Combining Both Statements:
Says 18th is Red then we have R Y (also fulfilling second statement that it is not green)
Says 18th is Red then we have G, then at 19th we can have Either R (also fulfilling second statement that it is not green)

So there is no definite answer.

Answer E.
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Re: DS - MGMAT question - Row of tiles [#permalink] New post 11 Mar 2008, 11:16
I think it is C, but C does seem like a to obvious of an answer.
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Re: DS - MGMAT question - Row of tiles [#permalink] New post 11 Mar 2008, 12:02
I get E as well..24th tile could be Green or Red
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Re: DS - MGMAT question - Row of tiles [#permalink] New post 11 Mar 2008, 16:38
Isn't the sequence GYR? thus st 1 and st 2 together (C) could be the answer?
18 G
19 Y
20 R...24 G

I'm a math tard so don't trust me on this...and maybe i'm reading it wrong but it says precedes
______________________________________________________________________________

I knew it was too easy to pick C! Tricky... thanks for the explanation!

Last edited by ocprep on 11 Mar 2008, 19:25, edited 1 time in total.
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Re: DS - MGMAT question - Row of tiles [#permalink] New post 11 Mar 2008, 18:38
abhijit_sen wrote:
Question says RYG should in sequence but does not say that G should be followed by Red or Yellow.

Statement 1:
The 18th tile in the row is not yellow.
May mean 18th tile is Red or Green so not sufficient.

Statement 2:
The 19th tile in the row is not green.
May mean 19th tile is Red or Yellow so not sufficient.

Combining Both Statements:
Says 18th is Red then we have R Y (also fulfilling second statement that it is not green)
Says 18th is Red then we have G, then at 19th we can have Either R (also fulfilling second statement that it is not green)

So there is no definite answer.

Answer E.


That's the trick.. the sequence could be G, Y, R, G, G, G...

OA is E.
Re: DS - MGMAT question - Row of tiles   [#permalink] 11 Mar 2008, 18:38
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In a single row of yellow, green and red colored tiles,

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