A car dealership offers k k\,k different models of car in 7 different colours.
Alex says there are 84 different combinations of one model and one colour.
Could Alex be correct?
You must show your working.
Practise Edexcel GCSE Maths The Product Rule for Counting with exam-style questions for Foundation and Higher tier. 68 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.