Answer 1

Comparison operators can be "chained" in Python.

https://docs.python.org/3/reference/expressions.html#comparisons

a < b < c

is evaluated as

a < b and b < c

Likewise

1 > n <= 9

is evaluated as

1 > n and n <= 9

Since n = 10, this evaluates to false.

Answer 2

Basically, it reads expressions from left to right.

Answer 3

emm, 10 > 9