Probability

Practice Questions

GED Math › Probability

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1

Given the data set , which of the following quantities are equal to each other/one another?

I: The mean

II: The median

III: The mode

2

A parking lot contains the following:

  • 11 black cars
  • 8 red cars
  • 3 blue cars

Find the probability that the next car that leaves the parking lot is a black car.

3

A die is altered so that it comes up a "6" with probability . The other five outcomes are equally likely. If this die and a fair die are rolled, what is the probability that the outcome will be a total of "2"?

4

A parking lot contains the following:

  • 7 blue cars
  • 1 white car
  • 3 black cars

Find the probability the next car that leaves is a blue car.

5

A weighted coin is flipped times. It is weighted such that heads comes up out of times on average. What is the probability that the person in question will flip all tails?

6

Billy flips a fair coin three times. His results were three tails. Billy then flipped the coin three times again and was shocked to see the results were also three tails! What is the probability that Billy flipped the coin 6 times, and all trials are tails?

7

What is the probability of selecting a king from a deck of cards, putting it aside, and then selecting an ace?

8

When rolling a -sided die, what is the probability of rolling or greater?

9

Six boys and four girls are finalists in a drawing. The ten names are placed into a hat, and two are drawn at random. What is the probability that both names drawn will be girls?

10

Find the probability that we draw a 3 from a deck of cards.

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