Cool brainteasers list

All I can think of right now is that the probability of 6 NOT happening is p(not 6) = (1 - 1/(2^6))^(195) p(not 6) = (63/64)^195 p(not 6) = 0.046 So the probability that 6 happens is pretty freaking high if the probability that it does not occur is 0.046… Repeat this for 7, 8, …, 200. Don’t want to get into the calculations now, but it seems like it would be something like 99% that you get a sequence of 6 or more heads or tails for 200 tosses, wow.