Question

A spinner is divided into equal parts as shown below.

A spinner is divided into 8 equal parts. 3 parts are yellow. 3 parts are blue. 1 part is green. 1 part is red.

Find the probability of spinning yellow or red on this spinner.

Answer 1

There are 8 equal parts; favorable outcomes = 3 yellow + 1 red = 4.
Probability = 4/8 = 1/2 = 0.5 = 50%.