12.(iv) A game of chance consists of spinning an arrow which comes to rest pointing at one of the numbers 1, 2, 3, 4, 5, 6, 7, 8 (see Fig. 15. 5 ), and these are equally likely outcomes. What is the probability that it will point at a number less than 9?
Total possible outcomes = {1,2,3,4,5,6,7,8}
Number of possible outcomes = 8
Let E be the event of pointing at a number less than 9
Since all the numbers on the wheel are less than 9, this is the sure event.
Number of favourable outcomes = 8
Therefore, the probability of pointing at a number less than 9 is