There are 4 starters, 5 main courses and x x\,x desserts in a restaurant.
Riley says there are 100 different ways of choosing a starter, a main course and a dessert.
Could Riley be correct?
You must show your working.
181 exam-style questions on OCR GCSE Maths The Product Rule for Counting. Each one has a worked solution and a mark scheme showing where the marks go.