If boxes 2, 3, and 4 all contain balls that are the same color as each other, then which one of the following must be...

Sangwook on September 19, 2015


I'm confused about the #3 condition: "There is a box containing a green ball that is lower in the sack..." Isn't that implying "only one box containing Green?" For example, If we don't make "W-G-G-G-R-R" we can't get right answer for very last question, right? However, I thought if (WGGGRR) is right, there are THREE Box containing green ball that is lower than ANY box containing red, not one. Please correct me. Thanks,


Melody on September 28, 2015

The third condition merely means that there is at least one box containing a green ball. It in no way means that there is exactly one box containing a green ball.

It uses the ambiguous pronoun "a," as opposed to "exactly one."

Hope that clears things up! Please let us know if you have any other questions.

Sangwook on September 30, 2015

Thanks a lot!!!^^