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.
Tiles
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Alright, this is a tricky and time consuming one
R = Red
Y = Yellow
G = Green
Sequence: R, Y, G
Stmt 1) The 18th tile in the row is not yellow.
Two possibilities:
A) 18 19 20 21 22 23 24
----G R Y G R Y G
B) 18 19 20 21 22 23 24
----R Y G R Y G R
Hence not sufficient
Stmt 2) The 19th tile in the row is not green.
Two possibilities:
A) 18 19 20 21 22 23 24
---- R Y G R Y G R
B) 18 19 20 21 22 23 24
---- G R Y G R Y G
Hence stmt 2 not sufficient as well.
Combining both statements:
18 Not Yellow and 19 not Green
Two possibilities, again:
A) 18 19 20 21 22 23 24
---- R Y G R Y G R
B) 18 19 20 21 22 23 24
---- G R Y G R Y G
Hence answer is E.
R = Red
Y = Yellow
G = Green
Sequence: R, Y, G
Stmt 1) The 18th tile in the row is not yellow.
Two possibilities:
A) 18 19 20 21 22 23 24
----G R Y G R Y G
B) 18 19 20 21 22 23 24
----R Y G R Y G R
Hence not sufficient
Stmt 2) The 19th tile in the row is not green.
Two possibilities:
A) 18 19 20 21 22 23 24
---- R Y G R Y G R
B) 18 19 20 21 22 23 24
---- G R Y G R Y G
Hence stmt 2 not sufficient as well.
Combining both statements:
18 Not Yellow and 19 not Green
Two possibilities, again:
A) 18 19 20 21 22 23 24
---- R Y G R Y G R
B) 18 19 20 21 22 23 24
---- G R Y G R Y G
Hence answer is E.
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What do you understand with preceded, I set this order GYR - R is preceded by yellow and yellow is preceded by Green.
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- Senior | Next Rank: 100 Posts
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