Higher November 2018 Paper 1 Q24
24. Anna has 7 photographs.
(a) Find the number of different ways that Anna can arrange her 7 photographs in a line on a table. [2]
(b) Find the number of different ways that Anna can randomly select 3 of her 7 photographs and arrange them in a line on a shelf. [2]
| Scheme | Marks | Comments |
|---|---|---|
| 5040 | B2 | B1 for \(7!\) or \(7 \times 6 \times 5 \times 4 \times 3 \times 2\ (\times 1)\) or equivalent |
| Scheme | Marks | Comments |
|---|---|---|
| 210 | B2 | FT ‘their 5040’ \(\div\ (4 \times 3 \times 2\ (\times 1))\) B1 for \(7 \times 6 \times 5\) or \(\dfrac{7!}{4!}\) |
| (4) |