Complementary events

Maths

Probability

There are 20 guests at a party. 12 of them are drinking coffee and the rest are drinking tea. What is the probability of selecting one who is drinking tea?

There are 18 marbles in a bag. 13 of them are not green. What is the probability of selecting a green marble?

The probability that it rains tomorrow is 0.4. What is the probability it is sunny?

There are 100 cars in a car park. 40 of them are yellow. What is the probability of choosing a car that is not yellow?

The probability that it will snow tomorrow is 0.05. What is the probability that it won't snow?

When you roll a fair six-sided dice, it is harder to roll a six than a four.

In a group of ten people, the probability that at least two were born on the same day of the week is 1.

There is an even chance of it raining on any given day.

If I roll a fair six-sided dice, I am more likely to get an even number than an odd number.

Since a football team can either win, lose, or draw, the probability that they win must be one third.

This lesson will be removed by end of Summer Term 2025.

Complementary events

Lesson outcome

This lesson will be removed by end of Summer Term 2025.