Question

Question 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 figure) and these are equally likely outcomes. What is the probability that it will point at a number less than 9?

Answer 1

Out of 8 numbers, an arrow can point any of the numbers in 8 ways.
$\therefore$ Total number of outcomes = 8
Since, each of the given numbers is less than 9.
Hence, the favourable number of outcomes = 8

Hence, P (arrow points at a number < 9)
$=\frac{Favourablenumberofoutcomes}{Totalnumberofoutcomes}=\frac{8}{8}=1$