Higher November 2018 Paper 4 Q9
9 72 children are asked whether they have a laptop or an iPad.
- 31 have a laptop.
- 48 have an iPad.
- 12 have both.
- 5 have neither.
(a) Represent this information on a Venn diagram.
[3]
(b) One of the children is chosen at random.
Write down the probability that they have an iPad but not a laptop. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
 | 3 | B2 for three correct entries, ignore labels or B1 for one element in the correct place | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(\dfrac{36}{72}\) oe | 2 | FT their labelled Venn diagram (2 sets) for 2 marks e.g. \(\dfrac{\textit{their } 36}{72}\) B1 for \(\dfrac{k}{72}\) where \(k \lt 72\) | isw cancelling and conversion, accept 50% for 2 marks |