Higher November 2022 Paper 4 Q20
20 Mrs Sweet has 8 different milk chocolates and 9 different plain chocolates.
Her daughter chooses one of the milk chocolates.
Her son then chooses one of the plain chocolates.
Mrs Sweet then chooses one of the remaining chocolates.
Work out how many different combinations of three chocolates they can choose. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 1080 | 3 | M2 for 8 × 9 × 15 or M1 for 8 × 9 × 15 with at most one error If 0 scored award SC2 for \(\frac{1}{8} \times \frac{1}{9} \times \frac{1}{15}\) or \(\frac{1}{1080}\) or SC1 for 1 × 1 × 2 = 2 | e.g. M1 for 8 × 9 × 17 or 1224 condone 8 × 9 × 1 for M1 not 8 × 9 |