Consider the sequence of 9 non zero distinct digits arranged in a 3 by 3 grid , like
547
398
162
Clearly there are 9! (=362880) ways to do it.
If we demand that the consecutive numbers are next-door neighbours
( horizontally or vertically) like
167
258
349
then the number is significantly lower, say N.

Find N & provide your reasoning.

Choose a topic that inspires you. If you missed the entry and topic you are going to do on your own, don't give up. Start with a basic essay rewriting service introduction to the problem and choose the aspect that interests you. The main thing is not to be afraid, together we will find answers to all questions.

Posted by Christopher Cloos on 2023-02-09 08:34:46