Question

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?

• A. 0
• B. 1
• C. 0.5
• D. 0.86

Answer 1

The correct option is B

1

Out of 8 numbers, an arrow can point any of the numbers in 8 ways.
$\therefore$ Total number of favorable outcomes = 8
Favourable number of outcomes = 8
Hence, P (arrow points at a number $<$ 9) = $\frac{8}{8}=1$