Make a 10 digit code using the digits 0-9 each once. Make another 10-digit code without any three adjacent code sequences repeating. How many unique codes can be made following these two rules?

For example:

code 1: 0,1,2,3,4,5,6,7,8,9

code 2 cannot contain 0,1,2 or 1,2,3 or 2,3,4 or ,3,4,5, etc. anywhere in its code.

## Question

## BMAD

Make a 10 digit code using the digits 0-9 each once. Make another 10-digit code without any three adjacent code sequences repeating. How many unique codes can be made following these two rules?

For example:

code 1: 0,1,2,3,4,5,6,7,8,9

code 2 cannot contain 0,1,2 or 1,2,3 or 2,3,4 or ,3,4,5, etc. anywhere in its code.

## Link to comment

## Share on other sites

## 13 answers to this question

## Recommended Posts

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.