Probability - practice for 14 year olds - page 9 of 10
Number of problems found: 186
- Roll the dice
What is the probability that if we roll the dice, a number less than five falls? - Probability 2955
There are 18 girls and 13 boys in the class. Four pupils will be chosen by lot to supervise the breaks. What is the probability that it will be the boys themselves? - Information 2704
The table contains information on the number of pupils according to the number of siblings: Number of siblings 0 1 2 3 and more Number of pupils 50 50 72 28 What is the probability that a randomly selected student has exactly two siblings? - Dices throws
What is the probability that the two throws of the dice: a) Six falls even once b) Six will fall at least once
- Sum 10
What is the probability that two dice thrown twice in a row will result in the sum of 10? - Throw
We throw two times with two dice. What is the probability that the first roll will fall more than the sum of 9 and the second throw has a sum of 3 or does not have the sum of 4? - Probability
In the lottery, numbers are drawn five from 50. What are the chances you will win the first prize? - Probability - tickets
What is the probability when you have 25 tickets in 5000 that you do not win the first (one) prize? - Basketball
Peter and Franta threw to the basket. Each had 20 attempts. Peter scored thirteen and twelve Franta. Give them a percentage of success.
- Win in raffle
The raffle tickets were sold to 200, 5 of which were winning. What is the probability that Peter, who bought one ticket, will win? - Candies
In the box are 12 candies that look the same. Three are filled with nougat, five with nuts, and four with cream. How many sweets must Ivan choose to satisfy itself that the selection of two with the same filling? ... - Ten dices
When you hit ten dice simultaneously, you get an average of 35. How much do you hit if every time you get six, you're throwing the dice again? - Raffle
How many raffle tickets must be purchased by Peter in a raffle with issued 200 tickets if he wants to be sure to win at least a third price? The raffle draws 30 prices. - Balls
The urn is eight white and six black balls. We pull four random balls. What is the probability that among them will be two white?
- The dice
What is the probability of events if we throw a dice rolled less than 1? - Dices
We will throw two dice. What is the probability that the ratio between numbers on the first and second dice will be 1:2? - Ace
We pulled out one card from complete sets of playing cards (32 cards). What is the probability of pulling the ace? - Probabilities
If probabilities of A, B, and A ∩ B are P (A) = 0.62, P (B) = 0.78, and P (A ∩ B) = 0.26, calculate the following probability (of the union. intersect and opposite and its combinations): - Monty Hall
Suppose you're on a game show and have the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. What is the
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