Foundation June 2024 Paper 2 Q12
12 A code has five different digits written in order, starting with the smallest.
The last digit is the only square number.
The middle digit is the only even number.
Work out the code. [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| 3 5 6 7 9 | B3 | B2 last digit square and middle digit even with three of the following constraints met:
or 9 7 6 5 3 B1 last digit square with no other squares or middle digit even with no other evens or 3 5 6 7 9 unordered, not scoring B2 |
Additional guidance
| Mark the answer line | |
| 1 3 6 7 9 (two squares is only error) | B2 |
| 3 5 6 7 1 (order is only error) | B2 |
| 3 3 6 7 9 (repeat is only error) | B2 |
| 0 3 6 7 9 (two even numbers) | B2 |
| 3 3 2 3 9 (order wrong and repeats but middle digit is only even and/or last digit is only square) | B1 |
| 3 3 2 3 4 (order wrong and two evens but last digit is only square) | B1 |
| 1 3 4 5 7 (middle digit is only even) | B1 |
| 2 2 5 6 4 (last digit is only square) | B1 |
| 2 3 4 5 6 | B0 |
| 1 3 4 8 9 | B0 |
| Must have 5 single digits |