Question

Which colour should be exchanged with red colour in the third figure in order to obtain a rotating pattern? (3 marks)

Answer 1

From observing the first two figures, we can identify a rotating pattern. The second image can be obtained by turning the first figure by 90${}^{\circ }$ in the clockwise direction. (1 mark)
So in order to have a pattern the next image will be obtained by rotating the second figure by 90${}^{\circ }$, as shown below. (1 mark)

So, if we replace the red colour by yellow and yellow by red, then the given images will follow a pattern. (1 mark)