CSEC Mathematics · January 2007 · Paper 2 · Question 8(i)

This question involves number sequences and patterns. A large equilateral triangle is subdivided into smaller equilateral triangles by joining the midpoints of the sides. This procedure is repeated n times. The table shows the results.

Calculate the number of triangles formed when n = 3.

This question uses a figure or table from the paper — you'll see it when you practise.