Better to use “and” or “in” when chaining “let” statements?

Question

I realize this is probably a silly question, but...

If I\'m chaining a bunch of let statements which do not need to know each other\'s values, is it

Answer 1

I would say in is better because it reduces scope and better expresses intent. If I see all these defintions chained together in a shared scope manner I would be under the impression that it was done for a reason and would be looking for how they effect each other.