1MA0 Foundation June 2014 Paper 1 Q4
4 Here are the first four terms of a number sequence.
3 7 11 15
(a) Write down the next term of this sequence. (1)
The 50th term of this number sequence is 199
(b) Write down the 51st term of this sequence. (1)
The number 372 is not a term of this sequence.
(c) Explain why. (1)
| Answer | Mark | Notes |
|---|---|---|
| 19 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 203 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| Explanation | 1 | B1 for any correct reason, e.g. terms are all odd but 372 is even or use of nth term \(4n - 1\) or not 1 less than a multiple of 4 |