Probability self diagnostic
- 1. Can the fraction 5/6 be a probability?
A) No
B) Yes
- 2. Can the fraction 6/5 be a probability?
A) No
B) Yes
- 3. Can 101% be a probability?
A) No
B) Yes
- 4. Can 1,01% be a probability?
A) No
B) Yes
- 5. Can 2 be a probability?
A) Yes
B) No
- 6. Can 0,0001 be a probability?
A) Yes
B) No
- 7. You roll a 6-sided die once. What is the chance of getting a 1 or a 2? (answer as a fraction in simplest form)
- 8. You roll a 6-sided die 210 times. About how many times would you expect to get a 1 or a 2?
- 9. You flip two coins. What is the chance of getting two heads? (answer as a fraction in simplest form)
- 10. A bag contains 3 yellow, 2 red and 5 green marbles (kulor). You pick a marble at random. The marble is red. You do not put the red marble back. You then pick a second marble at random. What is the probability that the second marble is green? (answer as a fraction in simplest form)
- 11. In the game of craps you roll 2 six-sided dice at the same time. If you roll a total of 7 or 11 on the first roll, you win immediately. What is the probability of winning on the first roll? (answer as a fraction in simplest form)
- 12. Channel 5 is having a Big Bang Theory marathon - they are playing the show all day, back to back. The show is 30 minutes long. You turn on the TV at a random time to watch. What is the chance that you will have missed less than 5 minutes of an episode? (answer as a fraction in simplest form)
- 13. You shuffle a normal deck of 52 cards. You pick a card and put it aside (you don't put it back). You then shuffle the rest of the cards and pick a second card. What is the chance that at least one of your cards is a heart? (answer as a fraction in simplest form)
- 14. You have two different bags of marbles (kulor). In one bag there are 3 black marbles and 2 white marbles. You don't know how many marbles are in the other bag. If you pick one marble at random from each bag, you will have a 2/5 chance of picking two black marbles. What fraction of the marbles in the second bag are black? (answer as a fraction in simplest form)
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