Given:
The sets are
and
.
To find:
Whether A and B are disjoint sets or not.
Solution:
Two sets are called disjoint sets if there are no common elements between them.
We have,


Clearly, there is not common elements between the set A and set B.
Therefore, the sets A and B are disjoint sets.
Ms. Handler drove at a rate of 75 km per hour. you do this by dividing the distance (225 km) by the time (3 hours) to get the average km traveled per hour