1.   What is the probability that when a coin is tossed it will land heads up?
    A. B.
    C. 1 D. 0
    Hint

  2.   What is the probability that you roll an odd number on a six-sided number cube?
    A. 1:1 B.
    C. 3:1 D.
    Hint

  3.   What is the probability of selecting a red or yellow marble from a bag that contains 20 red marbles, 15 yellow marbles, and 35 green marbles?
    A. B.
    C. 1:1 D.
    Hint

  4.   What are the odds of choosing a red marble from a bag that contains 20 red marbles, 15 yellow marbles, and 35 green marbles?
    A. 2:5 B. 2:7
    C. 4:5 D. 4:7
    Hint

  5.   What are the odds of not selecting a black ace from a standard deck of 52 cards?
    A. 25:26 B. 26:1
    C. 1:25 D. 25:1
    Hint