A box contains only Heart, Diamond, and Spade cards. A card is drawn at random. The table shows the probability of drawing a Heart card.
| Suit | Heart | Diamond | Spade |
|---|---|---|---|
| Probability | 0.25 |
The probability of drawing a Diamond card is the same as the probability of drawing a Spade card.
Complete the table.
There are 20 Heart cards in the box. Work out the total number of cards in the box.
Practise OCR GCSE Maths Probability with exam-style questions for Foundation and Higher tier. 100 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.