Intermediate November 2021 Unit 2 Q9
9. The \(n\)th term of a sequence is given by \(1{\cdot}7n - 3\).
(a) Write down the first three terms of this sequence. [2]
1st term = …………… 2nd term = …………… 3rd term = ……………
(b) Which term will be the first whole number in this sequence? [1]
First whole number is the ……………th term.
| Scheme | Marks | Comments |
|---|---|---|
| −1·3 0·4 2·1 | B2 | B1 for two correct in the correct position. OR for −3, −1·3, 0·4. |
| Scheme | Marks | Comments |
|---|---|---|
| 10(th term) | B1 | Allow B1 for 10(th) and 14. B0 if only 14 given in answer space. NOTE: If answer to 9(a) is −3, −1·3, 0·4 then allow an answer of 11(th term) |