Thursday, 9 October 2014

Brain Teaser of Birthdays!

One of my friends had a birthday yesterdau! To celebrate, I designed this brain-teaser; and now thanks to that person, ALL of your brains can be now be teased:

0, 8, 7, 15, 5, 13, 12, ??, 1, 9, 8, 16


Answer in the comments please.
By extension, if you don't know the answer, please don't look at the comments.

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