Mimi has two bags.
In the first bag there are 3 red balls and 7 green balls.
In the second bag there are 4 red balls and 5 green balls.
Mimi takes at random a ball from the first bag.
She then takes at random a ball from the second bag.
Work out the probability that Mimi takes two green balls.
Practise Edexcel GCSE Maths Probability Trees with exam-style questions for Foundation and Higher tier. 40 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.