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 not being orange or green ?

Answer»

0.65
0.75
0.25
`0.50`

SOLUTION :P(not orange or green) = 1 - P(orange or green)
`=1-(144^(@)+36^(@))/(360^(@))=1-(180^(@))/(360^(@))=1-(1)/(2)=0.5`
THUS (d) is correct OPTION.


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