(Ruby) How do you check whether a range contains a subset of another range?

Question

If I have two ranges that overlap:

x = 1..10
y = 5..15

When I say:

puts x.include? y 

the output is:

Answer 1

If a range includes either the beginning or the end of a second range, then they overlap.

(x === y.first) or (x === y.last)

is the same as this:

x.include?(y.first) or x.include?(y.last)