1MA0 Foundation November 2014 Paper 1 Q25
25 Express 180 as a product of its prime factors. (3)
| Answer | Mark | Notes |
|---|---|---|
| \(2 \times 2 \times 3 \times 3 \times 5\) | 3 | M1 for continual prime factorisation (at least two consecutive steps correct) or at least two stages of a factor tree correct M1 for a fully correct factor tree or list 2, 2, 3, 3, 5 A1 for \(2 \times 2 \times 3 \times 3 \times 5\) or \(2^2 \times 3^2 \times 5\) |