# Probability - practice problems

Probability is the measure of the likeliness that an event will occur. The probability (chance) is a value from the interval <0;1> or in percentage (0% to 100%) expressing the occurrence of some event. 0 is an impossible event, and 1 (100%) means the certainty event.#### Number of problems found: 413

- A single

A single, standard number cube is tossed. What is the probability of getting a number greater than 3? - Distribution function

X 2 3 4 P 0.35 0.35 0.3 The data in this table do I calculate the distribution function F(x) and then probability p(2.5 < ξ < 3.25) p(2.8 < ξ) and p(3.25 > ξ) - A pizza

A pizza place offers 14 different toppings. How many different three-topping pizzas can you order? - Five identical

Five identical coins are tossed. What is the probability of more than one head? - What fraction

What fraction of numbers 1 to 30 is prime? - Cards

The player gets eight cards of 32. What is the probability that it gets a) all four aces b) at least one ace - Probability 80854

A coin is tossed 24 times. Find the probability of getting 16 heads. (The probability of getting a head is 0.5) - A box

A box contains 6 red, 5 blue, and 4 white balls. Find the probability of drawing a) a red ball and b) a non-white ball. - Two dice

What is the probability that when the roll of two identical dice is the sum of points 7? - Lottery

The lottery is 60000 elk, in which 6200 wins. What is the probability that the purchase of 12 elks won nothing? - Binomial probability

What is the binominal probability that at least 4 of the six trials (n=6) are succeeded where φ = 0.50? - Double six-six

What is the probability that a player in the games of ludo will throw a double six twice? - Dice

We threw ten times playing dice. What is the probability that the six will fall exactly four times? - Roll the dice

What is the probability that if we roll the dice, a number less than five falls? - Bulbs

The probability that the bulb can operate 4000 hours is 0.3. What is the probability that exactly one of the eight bulbs can operate 4000 hours? - Correctly 20713

Out of 30 tasks, Peter solved 24 correctly. Find success rate in percent. - Probability 18073

Determine the probability that three balls, ten red, and ten blue balls, will be drawn from 3 balls of the same color. - Probability 7628

The probability that six will fall in just three rolls is once? - 20 balls

20 colored balls in a bag: Four red Seven green Nine yellow What is the probability of picking a yellow ball? - Dice

We throw five times the dice. What is the probability that six fits exactly twice?

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