perplexus.info :: Numbers : Restricted ternary numbers

Restricted ternary numbers (Posted on 2023-07-24)

Evaluate the quantity of 4-digit numbers such that:
a. Use only 3 digits: 1,2 & 3.
b. None of its neighboring digits differ by 2.

Same question for numbers of 5 and 6 digits- still using only 1,2,3.

Enjoy!

No Solution Yet Submitted by Ady TZIDON

No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)

Puzzle Answer

Comment 4 of 4 |

The required count of the 4-digit numbers that satisfy the given conditions is 41.

Posted by K Sengupta on 2023-07-24 23:17:07

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (17)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info