A survey was taken at a high school, and the results were put in a circle graph. The students were asked to list their favourite colours. The measurement of each central angle is shown. If a person is chosen at random from the school, find the probability of each response.

What is the probability of favourite colour being red ?

Options

A. 0.1
B. 0.2
C. 0.3
D. 0.4

Answer

A

Explanation

Probability `=("Area of region")/("Area of circle")`
`=("Total Angle in region")/(360^(@))`
P(red) `=(36^(@))/(360^(@))=(1)/(10)=0.1`
Thus (a) is correct option.