Brain Teasers Optical Illusions Puzzle Hunts Codes & Ciphers Mechanical Puzzles
Personal Links
Browse Teasers
Search Teasers

Code Breaker

Logic puzzles require you to think. You will have to be logical in your reasoning.


Puzzle ID:#19014
Fun:*** (2.24)
Difficulty:*** (2.81)
Submitted By:cnmne*us*****




Professor Abacus has scrambled the numerals 0 through 9 to form a 10-digit security code. Each numeral is used only once. Given the following clues, what is the security code?

1) The 4th and 5th digits form a triangle number.
2) The 5th and 6th digits form a prime number.
3) The 8th digit is three more than the 2nd digit.
4) The 10th digit is less than the 1st digit.
5) The sum of the 1st and 6th digits is twice the 9th digit.
6) The sum of the 3rd, 6th, and 9th digits equals 14.
7) There are three digits between the numerals 8 and 9.
8) There are no more than four digits between the numerals 1 and 4.
9) The numeral 5 is somewhere in the first five positions.

What Next?


See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.



Oct 11, 2004

Definitely have no idea what a triangle number is.
Oct 15, 2004

lol i went on google to find out what a triangle number is

Back to Top

Online Now
9 users and 577 guests

Users In Chat
Follow Braingle!
Fold 'N Fly Paper Airplanes
Easy to follow folding instructions and videos.
Copyright © 1999-2017 | FAQ | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise | Braingle Time: 9:02 pm
Sign In Create a free account