The combination of two sets is the Union of the sets and contains all the elements of both sets.
what are the two method naming sets
Closed sets and open sets, or finite and infinite sets.
There are two sets of two weeks in 31 days.
Overlapping sets.
two sets of wings
ladybugs have two sets of wings
An airplane with 2 sets of wings is known as a biplane.
a dog
fat white wings
An aeroplane is a heavier than air machine with wings and an engine to propel it.
A biplane.
to fly
a bi-planeA plane with two set of wings is a biplane.
A bi-wing
a biplaneBiplane
Biplane