The composition of each class can be completely determined if which one of the following pairs of students is known t...

Maria on May 28, 2015

Correct reasoning?

Is the answer C because it not only picks whether or not J or K goes first, but also because H can't go before M? I wanna make sure I'm doing it right

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Melody on May 28, 2015

You can access the full video explanation by tapping the "play" button on your screen.

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

William on May 18, 2018

There is no play button...explain

William on May 18, 2018

Nevermind, I get it. However, I see no play button

Leo on August 23, 2018

no play button here