Foundation June 2022 Paper 2R Q7
7 Here are the first five terms of a number sequence.
1 7 13 19 25
(a)
(i) Write down the next term of the sequence. (1)
(ii) Explain how you worked out your answer. (1)
(b) Explain why 188 cannot be a number in the sequence. (1)
| Scheme | Marks |
|---|---|
| (i) Answer: 31 | B1 |
| (ii) Answer: Correct explanation | B1 |
| (2) |
Notes
B1: e.g. ‘I added 6’, ‘add 6’, +6, 6n – 5 (need to know 6 and we need to add/go up oe)
| Scheme | Marks |
|---|---|
| Correct explanation | B1 |
| (1) | |
| (3 marks) |
Notes
B1: Acceptable e.g.
- Should be 187 oe
- 188 is even or not odd
- 187 and 193 (are in the sequence)
- Terms end in 1, 3, 5, 7, 9 or odd numbers
- Sequence is odd
- 6n – 5 = 188 gives a decimal or not a whole number
- Need to minus 1 oe
- It goes past 188 oe
- 193 is after 188 oe