Bilkent IEEE Weekly Puzzle

02 December 2013 Comments Off on Bilkent IEEE Weekly Puzzle

#9 – Question Mark

What should come in place of the question mark?
-1, -3, -1, 11, 39, ?, 167, 279, …

The Prize for This Question: Rubik’s Revolution 3” Cube With LED and Sound Effects

The Winner of Puzzle #7: Beyza Doğan

Send your answer to by 5:30 p.m. on December 3, or visit to submit your answer online, and get a chance to win the prize!

This question was prepared by Emrehan Halıcı, president of the Turkey Intelligence Foundation, for Bilkent IEEE.