There are 10 counters in a bag. 5 of the counters are red. 3 of the counters are blue. 2 of the counters are green. Billie takes two counters are taken at random from the bag.
Work out the probability that both of the counters Billie takes are the same colour.
You must show your working.
Practise Edexcel IGCSE Maths Conditional Probability with exam-style questions for IGCSE Maths. 4 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 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.
