Probability Problems

Probability Problems in NSW Year 8 maths (NESA outcome MA4‑PRO‑C‑01) takes the basic rule as known and focuses on careful counting: large or unusual sample spaces, events described with “and”, “or” and “not”, and objects that repeat, such as a die with faces 1, 1, 2, 3, 3, 3.

You will count runs of numbers, multiples and square numbers, work out chances with a full deck of cards or the days of a month, recount after some items are removed, and see that a fair coin does not remember earlier tosses. You will also work backwards from a decimal probability to a count, and compare games at a show or tickets in four raffles to find the best chance. It is part of Year 8 Probability.