1. A die is thrown once. What is the probability that the score is a factor of 6? 2. A fair coin is tossed three times. What is the probability of obtaining one Head and two Tails? 3. A special die is made in the shape of an octahedron; the die has 8 equal faces marked with the numbers 1 to 8. If the die is thrown once, what is the probability that the face that lands uppermost has a prime number? 4. There are 10 balls in a bag: 3 are red, 2 are blue and 5 are green. The balls of the bag are shaken before a boy randomly chooses one balls from the bag. What is the probability that she doesn't pick a red ball? 5. A special die is made in the shape of an icosahedron, and its faces are numbered with the numbers 1 to 20. When the die is thrown there is an equal chance of any face landing uppermost. If the die is thrown once, what is the probability that the face that lands uppermost has a number that is a factor of 20?