12. Five mark example problem

In a recent year, of the $1184$ centum scorers in various subjects in tenth standard public exams, $233$ were in mathematics, $125$ in social science and $106$ in science. If one of the student is selected at random, find the probability of that selected student:

 

(i) is a centum scorer in mathematics $=$ $\frac{i}{i}$

 

(ii) is not a centum scorer in science $=$ $\frac{i}{i}$