A bag contains only 5 identical red balls. One ball is drawn at random without looking. Answer the following questions:
a. (i) What is the sample space of this experiment?
b. (ii) Let event A be “the ball drawn is red” and event B be “the ball drawn is blue”. State whether each event is certain, impossible or neither.
c. (iii) Give a reason, based on the definition of probability, for the value of the probability of each of the events A and B.