Puzzle Solution: “The Island of Questioners”


The Island of Questioners

We must first find out Ethan’s type. Suppose Ethan is of type A. Then the correct answer to his question must be Yes (since Yes is the correct answer to questions asked by those of type A), which would mean that Ethan and Violet are both of type B, which would mean that Ethan is of type B, and we have a contradiction. Therefore, Ethan can’t be of type A; he must be of type B. Since he is of type B, the correct answer to his question is No, so it is not the case that he and Violet are both of type B. This means Violet must be of type A.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s