Higher January 2020 Paper 1 Q2
2 Find the lowest common multiple (LCM) of 28 and 105
(2)
| Scheme | Marks |
|---|---|
28, 56, 84, 112… and 105, 210, 315, 420… or 2, 2, 7 and 3, 5, 7 or  | M1 |
| 420 | A1 |
| (2) | |
| (2 marks) |
Notes
M1: for any correct valid method e.g.
for starting to list at least four multiples of each number
or 2, 2, 7 and 3, 5, 7 seen (may be in a factor tree and ignore 1)
or a fully correct Venn diagram
A1: cao