4MA0 Foundation January 2016 Paper 1R Q6
6 Here are the first five terms of a number sequence.
6 12 18 24 30
(a) Write down the 6th term of the sequence. (1)
186 is a term of the sequence.
(b) Write down the next term of the sequence after 186 (1)
(c) Find the 20th term of the sequence. (2)
The \(n\)th term of the sequence is \(T\).
(d) Write down a formula for \(T\) in terms of \(n\). (2)
| Scheme | Marks |
|---|---|
| 36 | B1 |
| (1) |
Notes
B1: cao
| Scheme | Marks |
|---|---|
| 192 | B1 |
| (1) |
Notes
B1: cao
| Scheme | Marks |
|---|---|
| \(20 \times 6\) or list of first 20 terms | M1 |
| 120 | A1 |
| (2) |
Notes
M1: Accept 114 or 126
| Scheme | Marks |
|---|---|
| \(T = 6n\) | M1 |
| A1 | |
| (2) | |
| Total 6 marks |
Notes
M1: for \(6n\) or \(n6\) or \(6 \times n\) or \(T\) = a linear expression in \(n\).
A1: Accept \(T = 6 \times n\) or \(T = n6\)