P6 / Nan Hua / 2021 / SA2 / Paper 2 – Q17 [5 marks]

Question:

White squares and black squares are used to form a pattern. The first four figures are shown below.
(a) The table below shows the number of white squares and black squares for the first four figures. Complete the table for Figure 5.
(b) How many white squares are there in figure 10?
(c) A figure in the pattern has a total of 441 black and white squares. What is the Figure Number?

Solution: