4MA0 Foundation June 2012 Paper 2 Q8
8
(a) Here is a list of four numbers.
1 3 4 7
Choosing numbers from the list, write a different number in each box to make the calculation correct.(b) Explain why the calculation can never be correct if the list is
1 3 5 7
(1)| Scheme | Marks |
|---|---|
| 1 7 ( × 2 =) 3 4 | B1 |
| (1) |
Notes
B1: cao
| Scheme | Marks |
|---|---|
| Multiplying by 2 always ends with an even number | B1 |
| (1) | |
| (Total 2 marks) |
Notes
B1: Accept any idea that the list contains no even digits (or only odd digits)