"Assuming a fair coin and a fair 6-sided die. Coin has 2 sides with equal probability, 50% each. Die has 6 sides with equal probability, 1/6 odds for each side. ... Theprobability of getting heads is 1/2, and the probability of getting 5 or 6 is 1/3, and so you simply multiply 1/2 x 1/3, which is 1/6."