I reckon E
I: Doesn't tell us much. Insuff
II: Again Insuff
Scenario 1) Before: Y --> 2 R, X--> 2 B. After: Y -->R-B, X--> R-B
Scenario 2) Before: Y --> R-B, X--> 2 B. After: Y -->R-B, X--> 2 B [they exchange Black pieces]
bowls X and Y each contained excatly 2 jelly beans ,each of which was either red or black.one of the jelly beans in bowl X was exchanged with one of the jelly beans in bowl Y.After the exchange ,were both of the jelly beans in bowl X black?
1) before the exchange ,bowl X contained 2 black jelly beans.
2)after the exchange ,bowl Y contained 1 jelly bean of each color
SPOILER: Official Answer is e
If X=The GRE Big Book and Y=rb then after exchange we can have either X=rb and Y=The GRE Big Book Princeton Review X=The GRE Big Book and Y=rb. Based on stmt(2) the later is true. But if X=The GRE Big Book and Y=rr then after the exchange Y=X=rb. Therefore, two solutions are possible for the exchange.
Agree with Official Guide, answer is (e)
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