#13 – Five-Digit Numbers
How many five-digit numbers can you formulate, with the condition that two identical digits may not appear in adjacent places?
The Prize for This Question: Rubik’s 3×3 Cube
Send your answer to ieee@bilkent.edu.tr by 5:30 p.m. on on March 4, or visit ieee.bilkent.edu.tr/zeka 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.