A folder contains nine numbered tiles.
Four tiles are numbered 5, two tiles are numbered 6, and three tiles are numbered 7.
Leo takes a tile at random. He does not replace the tile. Leo then takes another tile at random.
Calculate the probability that both tiles have the same number on them.
Calculate the probability that the number on the second tile Leo takes is greater than the number on the first tile he takes.
72 exam-style questions on OCR GCSE Maths Conditional Probability. Each one has a worked solution and a mark scheme showing where the marks go.