Question

#22-1: There are 8 sections of the spinner. There are 2 red, 2 green, 2 blue, and 2 yellow sections. the

the probability of the spinner landing on any color other than red or green? Express the probability as a fraction in lowest terms.

Answer 1

1/2

Explanation:

First count how many sections aren't red or green: 2 yellow + 2 blue

Now we know that the total number of sections is 8.

So out of those 8 sections, 2 yellow + 2 blue aren't red or green.

That is, 4 out of the 8 sections aren't red or green.

This can be expressed as a fraction: 4/8

Now we simplify the fraction by dividing by 4 on the top and bottom: 1/2

Answer 2

1/2

(This is assuming all sectors are congruent)

Explanation:

Well the other two colors that aren't red or green is blue and yellow.

There are 2 blues and 2 yellows.

There are 8 sections altogether.

We are asked to find the probability that our spinner will land on blue or yellow so we do (blue+yellow)/all = (2+2)/8=4/8=1/2.

This probability was assuming all sectors were congruent sectors.