Theoretical Probability
A standard six-sided die is rolled. What is the probability of rolling a number greater than 4?
the probability is 2/6
You flip a coin 50 times and get heads 28 times. What is the experimental probability of flipping heads?
(28 heads / 50 flips) = 0.56 or 56%
A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. is it Impossible, Unlikely, Likely, or Certain you pull out a yellow marble?
It is impossible to pull out a yellow marble
A coin is thrown 3 times .what is the probability that atleast one head is obtained?
7/8
There are three even numbers (2, 4, 6) out of six possible outcomes?
the probability is 3/6 or 1/2
A bag contains 3 red marbles, 5 blue marbles, and 2 green marbles. What is the probability of randomly selecting a blue marble?
the probability is 5/10
You roll a six-sided die 100 times and get a 6 a total of 20 times. What's the experimental probability of rolling a 6?
(20 times / 100 rolls) = 0.2 or 20%
A standard six-sided die is rolled. is it Impossible, Unlikely, Likely, or Certain for you to roll a 2?
Rolling a 2 on a standard six-sided die is Unlikely
Find the probability of getting a numbered card when a card is drawn from the pack of 52 cards.
36/52 = 9/13
if you draw 10 cards and 3 are hearts whats the probability?
the experimental probability of drawing a heart is 3/10, or 30%
You flip a fair coin twice. What is the probability of getting two heads?
1/2 * 1/2 or 1/4
A spinner has 3 sections: red, blue, and green. You spin it 60 times, and it lands on red 22 times, blue 25 times, and green 13 times. What is the experimental probability of landing on blue?
(25 times / 60 spins) = 0.4167 or approximately 41.67%
The weather forecast predicts a 90% chance of rain tomorrow. it it Impossible, Unlikely, Likely, or Certain for it to rain tomorrow?
it is likely to rain tomorrow, but not certain
There are 5 green 7 red balls. Two balls are selected one by one without replacement. Find the probability that first is green and second is red.
35/132
There are 10 marbles in a bag 5 red marbles, 2 purple marbles, and 3 yellow marbles what is the probability of getting a green marble
If a bag contains only red, purple, and yellow marbles, picking a green marble is impossible
A deck of 52 playing cards is shuffled. What is the probability of drawing a heart?
the probability is 13/52
You reach into a jar of 100 candies and pull out a candy. 30 are red, 40 are blue, and 30 are green. What is the experimental probability of pulling out a blue candy?
(40 blue candies / 100 total candies) = 0.4 or 40%
A wheel is divided into 4 equal sections: red, blue, green, and yellow. is it Impossible, Unlikely, Likely, or Certain to spin a red?
It is unlikely to spin red.
What is the probability of getting a sum of 7 when two dice are thrown?
6/36 = 1/6
A bag contains 5 red, 3 blue, and 2 green marbles. What's the probability of drawing a red marble?
5/10 = 1/2 or 50%
A spinner has 5 equal sections numbered 1 to 5. What is the probability of the spinner landing on an even number?
the probability is 2/5.
You draw a card from a standard deck of 52 cards, replace it, and shuffle. You do this 100 times. 25 times you draw a heart. What is the experimental probability of drawing a heart?
(25 hearts / 100 draws) = 0.25 or 25%
A standard deck of 52 cards is shuffled. Is it Impossible, Unlikely, Likely, or Certain to pull a king of hearts?
it is unlikely to pull the king of hearts from a well-shuffled deck of 52 cards
Find the probability of getting two heads when five coins are tossed.
10/32 = 5/16
Count the number of times a blue marble was picked (Suppose it is 6)
The experimental probability of getting a blue marble from the bag is 6/10 = 3/5