4MA0 Foundation January 2014 Paper 2R Q4
4 Here is a sequence of patterns made from small triangular tiles.

The table shows the number of tiles used to make each pattern.
| Pattern number | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Number of tiles | 1 | 4 | 9 | 16 |
(a) How many tiles are used to make
(i) Pattern number 5
(ii) Pattern number 10
(2)A pattern in the sequence is made from 144 tiles.
(b) Find the Pattern number for this pattern. (1)
(c) On the diagram below, shade \(\dfrac{2}{3}\) of Pattern number 3.
(1)

Some tiles in Pattern number 4 are shaded.

(d) What fraction of Pattern number 4 is shaded?
Give your fraction in its simplest form. (2)
Give your fraction in its simplest form. (2)
| Scheme | Marks |
|---|---|
| (i) Answer: 25 | B1 |
| (ii) Answer: 100 | B1 |
| (2) |
| Scheme | Marks |
|---|---|
| 12 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| 6 triangles shaded | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| \(\dfrac{4}{16}\) | M1 |
| \(\dfrac{1}{4}\) | A1 |
| (2) | |
| (Total 6 marks) |
Notes
M1: Any fraction equivalent to \(\dfrac{4}{16}\) but not \(\dfrac{1}{4}\)