Discussion
Which one of the following CANNOT be the complete
color combination of the glass in one of the windows?
*This question is included in PT 62 LG, question #8
(A) | green and orange |
(B) | ... |
(C) | ... |
(D) | ... |
(E) | ... |
(F) | ... |
The solution is
Posted: 08/16/2011 10:05
I thought this would be D because purple and orange cannot co-exist
Posted: 08/17/2011 00:23
Rule 4 says "~P --> O". The contrapositive of Rule 4 is "~O --> P".
What this means is that each window MUST have O or P (and that a window could have BOTH P and O).
Here's the setup for the game:
G, O, P, R, Y
Rule 1: (G + P) x1 *exactly*
Rule 2: R x2 *exactly*
Rule 3: Y --> ~G, ~O
Rule 4: ~P --> O
CPos 3: (O or G) --> ~Y
CPos 4: ~O --> P
Rule 3 + CPos 4: Y --> ~O --> P
___ ___ ___
P/O
___ ___ ___
P/O
___ ___ ___
P/O
Q 8:
(A) This answer choice contains O.
(B) This answer choice contains P.
(C) This answer choice does not contain P or O, so it CANNOT be true.
(D) This answer choice contains O.
(E) This answer choice contains O.
What this means is that each window MUST have O or P (and that a window could have BOTH P and O).
Here's the setup for the game:
G, O, P, R, Y
Rule 1: (G + P) x1 *exactly*
Rule 2: R x2 *exactly*
Rule 3: Y --> ~G, ~O
Rule 4: ~P --> O
CPos 3: (O or G) --> ~Y
CPos 4: ~O --> P
Rule 3 + CPos 4: Y --> ~O --> P
___ ___ ___
P/O
___ ___ ___
P/O
___ ___ ___
P/O
Q 8:
(A) This answer choice contains O.
(B) This answer choice contains P.
(C) This answer choice does not contain P or O, so it CANNOT be true.
(D) This answer choice contains O.
(E) This answer choice contains O.