1.

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 ?

Answer»

<P>0.1
0.2
0.3
0.4

Solution :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.


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