Question

A spinner is shown.

Red
Violet
Orange
Indigo
Yellow
Blue
Green
The spinner arrow is spun 150 times
Ahout how many times will the spinner arrow stop on Blue or Green?

Answer 1

• Approximately 43 times

Explanation:

Number of sections is 7

Probability of each section is 1/7

Probability of blue or green:

• P(blue or green) = 2*1/7 = 2/7

Spinner nun 150 times, number of stops on blue or green:

• N = 2/7*150 = 42.86 ≈ 43 (rounded up)

Answer 2

43

Explanation:

Total number of different colors = 7

Probability of spinner landing on blue = 1/7

Probability of spinner landing on green = 1/7

Probability of spinner landing on blue OR green = 1/7 + 1/7 = 2/7

if the spinner is spun 150 times,

Number of times spinner will land on green or blue = Probability of spinner landing on blue OR green x 150

= 2/7 x 150

= 42.85714...

= 43 (rounded to the nearest whole number)