There are 30 pens in a box. 12 of the pens are black. 7 of the pens are green. The rest of the pens are red. One of the pens is chosen at random.
Find the probability that the pen is red.
Practise Eduqas GCSE Maths Probability with exam-style questions for Foundation and Higher tier. 212 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 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.
