Question

Rob flips a coin 12 times. The result of each flip is heads up or tails up. The size of the sample is 4096. The number of outcomes that result in exactly 3 heads is 220. How many outcomes result in more or less than 3 heads?

Answer 1

The question is asking how many times in the same did the coin land on heads >3<. Since we know how many times the sample has landed on heads 3 consecutive times, and the size of the sample, just do 4096 - 220 = .