In a group of 50 people, 31 watch football, 13 watch golf and 17 watch hockey. Eight watch football and golf, seven watch golf and hockey, nine watch football and hockey, and five watch all three.
Find the number who watch football only.
Find the number who watch none of the three sports.
36 exam-style questions on CCEA A Level Maths 2.6 Probability, covering 2.6.1 Probability, 2.6.2 Probability, 2.6.3 Probability, and 2.6 Probability. Each one has a worked solution and a mark scheme showing where the marks go.