GRAPHS ADJACENT MATRIX

In the first example why is the box that says 3 connected to 1 true?

Yes bhaiya did it by mistake, he wanted to right true in next column i.e., to right box of (3,1) which is (3,2) to represent that 3 & 2 are connected.

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.