Question

How many of the (upper or lower case) letters of the
alphabet are not path-connected?
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

Answer 1

if you understand the meaning of path-connected, this should be clear.
what do you think is the answer?

Answer 2

I'm not sure I have a clear understanding. Because it looks like zero to me, but I wasn't sure.