Foundation November 2017 Paper 2 Q16
16
(a) Write the next term in each of these sequences.
(i) \[1 \qquad 1 \qquad 2 \qquad 3 \qquad 5 \qquad 8\]
[1]
(ii) \[2 \qquad 4 \qquad 8 \qquad 16 \qquad 32 \qquad 64\]
[1]
(b) Write an expression for the \(n\)th term of the sequence below.\[15 \qquad 12 \qquad 9 \qquad 6\]
[2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| (i) 13 | 1 | Ignore subsequent terms | |
| (ii) 128 | 1 | Ignore subsequent terms | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(18 - 3n\) oe | 2 | M1 for \(-3n + k\) oe or for \(mn + 18\) oe (\(m \ne 0\)) | For 2 or M1, condone eg \(n = 18 - 3n\) For 2 or M1, condone use of other variable instead of \(n\) |