June 2022 Paper 2 Q7
7 How many integers between 200 000 and 400 000 can be formed using only the digits
\[1 \qquad 2 \qquad 3 \qquad 5 \qquad 8 \qquad 9\]with no repetition of any digit? [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| 240 | B2 | B1 \(2 \times 5 \times 4 \times 3 \times 2\) or \(2 \times 120\) or \(2 \times 5!\) or 240 seen SC1 answer 120 or 360 or 480 or 600 or 720 |
Additional guidance
| Ignore \(\times\) 1 for B1 | |
| 240 in working lines with 60 on answer line | B1 |
| 720 in working lines with 1440 on answer line | Zero |
| Allow dots for multiplication but do not allow addition |