You are to generate 9-digit numbers, using the numbers 1 to 9 once in each. The conditions are:
– Consecutive numbers may not be next to each other.
– Two odd or two even numbers may not be next to each other.
Under these conditions, how many 9-digit numbers can be generated?
The Prize for This Question: Rubik’s Revolution 3” Cube With LED and Voice/Sound Effects
Send your answer to ieee@bilkent.edu.tr by 5:30 p.m. on March 31, 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.