Theoretical Probability
A die is rolled, find the probability that an even number is obtained.
P (even number) = 1/2
You rolled a dice and recorded your results below. What was the probability that you rolled a 6?
1: 4 times 4: 6 times
2: 3 times 5: 2 times
3: 4 times 6: 1 time
P(roll a 6) = 1/20
A die has sides 1 through 6. Kevin wants to roll two die, and roll a 6 on both. What is the probability he will roll two sixes?
P(roll 6 then 6) = 1/36
You flip a coin. How many times should you get heads if you flipped it 46 times?
23 times
A card is drawn at random from a deck of cards. Find the probability of getting the 3 of diamond.
52 cards in a deck
P (3 of diamonds) = 1/52
You make your lunch for a week. You have chips, a fruit, veggie, and sandwich. What is the probability that you use cheetos in your lunch?
Doritos: 1 time Fritos: 3 times
Cheetos: 2 times Lays: 1 time
P(cheetos) = 2/7
What is the probability of getting heads three times in a row when flipping a coin?
P(heads three times) = 1/8
A die is rolled, find the number of times you should roll a number less than 3 if you rolled the dice 105 times.
35 times
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
P(lemon) = 1/10
You flipped coins. The results are below. What was the probability that you flipped a tails?
Tails: 48 times Heads: 29 times
P(tails) = 6/11
A fruit basket has 45 fruits. there are 17 apples, 18 grapes, 4 bananas, and 6 lemons. What is the probability of Nate choosing a lemon, replacing it, then choosing an apple?
P(lemon then apple) = 34/675
In the bag there are 5 striped, 4 dotted, 7 swirled, and 2 clear marbles. How many times should you pick a clear marble if you reached in 40 times?
4 times
A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?
P(white marble) = 1/2
You are playing monopoly. There are 4 railroad spaces. You landed on many different spaces and kept track below. What is the probability that you landed on a railroad space?
Railroad: 8 times Utilities: 3 times
Property: 27 times Random: 14 times
P(railroad space) = 2/13
You have a bag containing 30 marbles. 13 orange, 4 blue, 6 green, 2 yellow, and 5 purple. What is the probability that you pick an orange first, blue second, and a pink third? This is all with replacement too.
P(orange then blue then pink) = 0
There are an even amount of fruit to choose from when making your lunch. You have a banana, orange, apple, pear, and mango. How many times should you reach into the fridge and pick out any fruit if you did it 27 times?
5 times
In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
P(neither red nor green) = 1/3
P(blue) = 1/3
Explain experimental probability.
What actually happened
In a pack of 52 cards, a card is drawn at random without replacement. Find the probability of drawing a queen followed by a jack.
P(jack then queen) = 16/2652
What is probability?
The chance/likelihood an event occurs