October 9, 2015

Homework Help: ALGEBRA

Posted by Daniel on Wednesday, November 30, 2011 at 9:38pm.

Andy draws the question card, “How many 7s do you see?” He answers, “one,” because he cannot see the 7 on his own head; he sees only the 7 on Belle's head.

Next Belle draws the question card, “ Of the four even numbers, how many different even numbers do you see?” She answers, “Three,” because she sees the 4, 6, and 8 on Andy and Dan's head.

From this, Dan can conclude he has two even cards, since he can only see a 6 and Belle sees two more.

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