General Mathematics Paper 2, WASSCE (PC 2ND), 2022

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.