Even though it has not happened yet again
The union of a collection of sets is the set of all elements in the collection.
We have B = {a, l, g, e, b, r} and C = {m, y, t, h}
<h3>B ∪ C = {a, l, g, e, b, r, m, y, t, h}</h3>
C
Because 1 km is 1,000 meters so you were just multiply 1000 by 10 and get 10,000
c:
