(a) In how many ways can we 2-color the eight regions of the pinwheel shown in Fig. 16.16, using the colors black and gold, if the back of each region remains grey?
(b) Answer part (a) for the possible 3-colorings, using black, gold, and blue paints to color the regions.
(c) For the colorings in part (b), how many have four black, two gold, and two blue regions?

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