Question:
John uses triangles and circles to form figures that follow a pattern as shown below.
(a) The table shows the number of triangles and circles for the first four figures. Complete the table for Figure 5.
(b) A figure in the pattern has a total of 51 triangles and circles. What is the Figure Number?
(c) How many circles did John use for Figure 115?
Solution:
![P6 / Ai Tong / 2020 / SA2 Prelims / Paper 1 – Q11 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/08/P6_SA2_2020_Ai_Tong_Paper1_Q11-Qns.jpg?resize=400%2C260&ssl=1)