Question

A spinner has 8 equal sized spaces numbered 1-8. If the spinner is spun once, find the probability that it lands on an even number or a number greater than 6.

Answer 1

The probability that it lands on an even number or a number greater than 6 are 1/2 and 1/4 respectively

Data;

• Number of sides in the spinner = 8
• Number of even numbers from 1 - 8 = 4
• Numbers greater than 6 = 2

Probability

The probability of an event occurring is the ratio between number of possible outcomes to the total number of sample space.

a)

The probability of having an even number is

$P = \frac{4}{8} = \frac{1}{2}$

b)

The probability of having a number greater than 6 is

$P = \frac{2}{8} = \frac{1}{4}$

The probability that it lands on an even number or a number greater than 6 are 1/2 and 1/4 respectively

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