## Labels

### GED Math Review: Probability

1. On an afternoon TV game show, contestants can choose one of ten prizes, numbered 1 through 10, sight unseen. Five of the prizes are almost worthless (for example, toilet bowl cleaner), two are worth \$100, two are worth \$1,000, and the grand prize is a new car. What is the chance that the ninth contestant will win the car?
• 1/2
• 9/10
• 4/5
• 1/10
2. Consider a pair of dice, which are six sided cubes with a number from 1 to 6 on each side. If we tossed them as a pair, what is the probability that the total shown will be between 2 and 12?
• 10%
• 25%
• 50%
• 100%
3. Getting head on the flip of a coin, what is its probability?
• 1/2 or 50%
• 1/4 or 25%
• 1/1 or 100%
• 3/5 or 60%
4. Suppose you have a jar containing 20 marbles. Eight of them are red, 7 are yellow, and 5 are blue. Now if you choose a marble from the jar, without looking so it is a random pick, which probability would be true that a yellow marble is picked?
• 7/20 or 35%
• 5/20 or 25%
• 8/20 or 40%
• 15/20 or 75%
5. Suppose you have a jar containing 20 marbles. Eight of them are red, 7 are yellow, and 5 are blue. Let's now consider two picks and the probability of picking a red marble on the first pick and a yellow one on the second pick. What is the probability of red and yellow on two picks?
• 14%
• 28%
• 42%
• 56%