Question

Which of the following cannot be the probability of an event?

Options

• 0.4

• 4%

• 0.04%

• 4

Answer 1

4

Explanation:

The probability of an event must always lie between 0 and 1, inclusive. This means the lowest possible probability is 0 (impossible event), and the highest is 1. 0.4, which is valid since it lies between 0 and 1. However, 4 is outside the 0 ≤ P ≤ 1, so it cannot be a valid probability.