Answer
$\emptyset \cap R = \emptyset$; $\emptyset$ and R are disjoint sets.
Work Step by Step
RECALL:
(1) $\emptyset$ is the empty set
(2) The symbol $\cap$ represents intersection of sets which lists down in a set the elements that are common to the given sets.
Since the empty set has no elements., then its intersection with any other set will also be empty.
Thus,
$\emptyset \cap R = \emptyset$
Two sets that have no elements in common are disjoint sets.
