Question

an animal sanctuary houses a variety of animals. to understand the workload of the sanctuarys veterinarians, the director looked at which types of animals were treated or not treated by various doctors. the venn diagram shows this information for two of the doctors.
(a) how many types of animals were not treated by dr. powell?
types of animals
(b) how many types of animals were treated by both dr. nelson and dr. powell?
types of animals
(c) which types of animals were treated by neither dr. nelson nor dr. powell? choose all that apply.
birds cats elks koalas
llamas otters rabbits turtles

Explanation:

Step1: Identify non - Dr. Powell animals

Animals outside Dr. Powell's circle are elks. So for part (a), there is 1 type.

Step2: Identify animals in intersection

The animals in the intersection of Dr. Nelson and Dr. Powell's circles are rabbits and turtles. So for part (b), there are 2 types.

Step3: Identify animals outside both circles

Cats and otters are outside both Dr. Nelson and Dr. Powell's circles. So for part (c), the answers are cats and otters.

Answer:

(a) 1
(b) 2
(c) Cats, Otters