Answer:
Step-by-step explanation:
probability=number of times of outcome/total number of possible outcomes
for example;
in a class of 12 boys, and 18 girls ,the probability that a student selected from the class is a boy is
p(B)=12/30=2/5, since the number of boys in the class is 12 and the total number of students in the class is 30 also the probability that a girl is picked
=18/30=3/5.
