1 EASY If 2 coins are tossed, what is the probability of obtaining 2 heads? $$\frac{1}{4}$$$$\frac{1}{2}$$$$\frac{3}{4}$$$$\frac{1}{8}$$$$\frac{3}{8}$$

 2 MEDIUM The probability of an event is one in every twenty. The probability of the two events occurring in a row is $$\frac{1}{20}\times\frac{1}{20}$$. What is the probability of the 10th event? 0.00001%0.0000001%0.00000001%0.000000001%5%

 3 MEDIUM A fair six-sided die is rolled 3 times. What is the probability that 6 shows up in at least 1 roll? $$\frac{1}{2}$$$$\frac{1}{6}$$$$\frac{5}{6}$$$$\frac{91}{216}$$$$\frac{1}{12}$$

 4 MEDIUM An ice cream truck has a 20% chance of coming on Monday, 50% on Wednesday, and 100% on Friday. What is the probability of it coming on Monday, Wednesday, and Friday? 80%100%10%50%20%

 5 HARD There are 13 spades in a regular 52 card deck. What is the probability of drawing 2 spades in a row? 5.9%4.4%3.4%7.2%6.3%