There are 11 pens in a box.
5 pens are red. 4 pens are blue. 2 pens are green.
One pen is selected at random from the box.
Write down the probability that pen is green.
Write down the probability that pen is black.
Practise OCR GCSE Maths Probability with exam-style questions for Foundation and Higher tier. 212 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.
