There are 12 socks in a drawer. 7 of the socks are black. 5 of the socks are white. Two socks are picked at random from the drawer.
Work out the probability that one sock of each colour is picked.
You must show your working.
Practise AQA GCSE Maths Conditional Probability with exam-style questions for Foundation and Higher tier. 28 questions, matched to the AQA GCSE Maths (8300) 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.