Question

A spinner is coloured by 3 different colours-yellow, blue and red in 12 equal sectors. After spinning the wheel, what is the probability that
(i) wheel stops at yellow colour.
(ii) wheel stops at red colour.
(iii) wheel stops at blue colour.

Answer 1

(i) `"P(wheel stops at yellow colour)"=(n(Y))/(n(S))=(4)/(12)=(1)/(3)`
(ii)`"P(wheel stops at red colour)"=(n(R))/(n(S))=(3)/(12)=(1)/(4)`
(iii) `"P(wheel stops at blue colour)"=(n(B))/(n(S))=(5)/(12)`
or `"P(blue)=1-((1)/(3)+(1)/(4))=1-(7)/(12)=(5)/(12)`