Mathematics for IGCSE & O level - Probability (Section 1 - No. 9)
What is the probability of not rolling a 6 on a single roll of a standard six-sided die?
1/6
1/3
5/6
0
Explication
The probability of rolling a 6 is 1/6. The probability of *not* rolling a 6 is 1 - 1/6 = 5/6.