Question 5
There are 25 boys and 15 girls in a class, all of them are equally likely to be chosen for a contest. If two students are chosen one after the other without replacement for the contest, find probability that:
(a) two boys are chosen;
(b) a boy and a girl are chosen;
(c) two boys or two girls are chosen.
A box contains 5 red, 3 green and 4 blue identical beads. Calculate the probability that a girl takes away two red beads, one after the other, from the box. 
Observation
The Chief Examiner reported that majority of the candidates who attempted performed satisfactorily.
