a/b: I think there are 6 Possible outcomes while you flip three times.
THH, HTH, HHT - HTT, THT, TTH
c: The probability of you getting a tail is 50% because there is only head and tail So the probability percentage will be divided in two. same for Q: d.
<span>64π</span><span> is correct, since the </span>area<span> of the white </span>circle<span> is 36</span>π, and 100π<span> - 36</span>π<span> = 64</span>π<span>.</span>