Which one of the following is a complete and accurate list of the recycling centers in Rivertown any one of which cou...

Carlos on February 21, 2016

Incorrect answer

If only one recycling center could recycle plastic, how is possible that center 1 and 3 is the correct answer instead of only center 3.

4 Replies

Jenkin on February 24, 2016

I too have the same question

Mehran on February 25, 2016

This question is asking us to identify a complete and accurate list of recycling centers in Rivertown any one of which COULD recycle plastic.

So while you are correct that only one of the recycling centers recycles plastic, that one center can be either Center 1 or Center 3. Obviously, it cannot be both but that is not what this question is asking.

You can also watch detailed video explanations for this game by selecting the â–¶ icon in the top right hand corner of the screen when viewing this question inside of LSATMax.

Hope this helps! Please let us know if you have any other questions.

Lindsey on May 16, 2016

If center 1 and center 2 recycle the same material, how is it possible to have plastic in center 1 without violating the condition of plastic recycled only in one center?

Mehran on May 20, 2016

@lindseyru the reason is that Center 1 and Center 2 do not have to recycle the same material.

The second condition actually states, "Every kind of material that Center 2 recycles is also recycled at Center 1."

"Every" introduces a sufficient condition, so we would diagram this condition as follows:

2 âž¡ 1
not 1 âž¡ not 2

This DOES NOT mean Center 1 and Center 2 recycle the same material.

Center 1 is the necessary condition here so its existence tells us nothing else, i.e. it is possible that Center 2 recycles the same material, but it is also possible that it does not.

Therefore, it is possible that Center 1 recycles plastic and Center 2 does not.

Hope this helps! For a more in-depth review of these concepts, please review our Sufficient & Necessary lesson.