4400 Higher June 2004 Paper 3 Q5
5
(a) Express 200 as the product of its prime factors. (2)
(b) Work out the Lowest Common Multiple of 75 and 200. (2)
| Scheme | Marks |
|---|---|
| prime factors 2 & 5 seen | M1 |
| \(2 \times 2 \times 2 \times 5 \times 5\) or \(2^3 \times 5^2\) | A1 |
| (2) |
| Scheme | Marks |
|---|---|
| \(2 \times 2 \times 2 \times 3 \times 5 \times 5\) | M1 |
| 600 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: for \(2 \times 2 \times 2 \times 3 \times 5 \times 5\) or for lists of multiples with at least 3 correct in each list
A1: cao