Sam has two bags.
In the first bag there are 4 blue buttons and 6 yellow buttons.
In the second bag there are 3 blue buttons and 5 yellow buttons.
Sam takes at random a button from the first bag.
He then takes at random a button from the second bag.
Work out the probability that Sam takes two yellow buttons.
Practise OCR GCSE Maths Probability Trees with exam-style questions for Foundation and Higher tier. 40 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.