Syntax related to "all"

Question

what is the difference between below statement>
if all([i > 5 for i in nums]): vs
if ([i > 5 for i in nums]): vs
if (i > 5 for i in nums):

Answer 1

first returns True if all elements > 5
second returns a list like [True, False, True], returns True if list is not empty
third returns a generator, returns True