In a stationery drawer there are only pens, pencils and rulers.
number of pens : number of pencils : number of rulers=3:7:5 \text{number of pens : number of pencils : number of rulers} = 3 : 7 : 5 number of pens : number of pencils : number of rulers=3:7:5An item is taken at random from the drawer.
Complete the table to show the probabilities of the item being a pen, a pencil or a ruler.
| Item | Pen | Pencil | Ruler |
|---|---|---|---|
| Probability |
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.
