In a box there are only black pens, blue pens and red pens.
A pen is taken at random from the box.
The table shows the probability of taking a black pen and a blue pen.
| Colour | Black | Blue | Red |
|---|---|---|---|
| Probability | 512\displaystyle \frac{5}{12}125 | 13\displaystyle \frac{1}{3}31 |
Complete the table to show the probability of the pen being red.
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.
