Probability - practice for 13 year olds - last page
Number of problems found: 138
- Roll the dice
What is the probability that if we roll the dice, a number less than five falls? - 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? - Sum 10
What is the probability that two dice thrown twice in a row will result in the sum of 10? - 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. - 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. - 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?
- 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 - Components
The 8 white, 4 blue, and 2 red components are in the box. What is the probability that we pull one white, one blue, and one red component without returning it? - Scrap
From 19 products are 4 scraps. What is the probability that the random pick of 2 products has no defective product? - Pizza
A school survey found that 10 out of 15 students like pizza. If 5 students are chosen randomly, what is the probability that all 5 students like pizza? - Pediatrician
Pediatrician, this month of 24 working days takes 6 days holidays. What is the probability that on Monday it will be at work?
- Rectangle
In a rectangle with sides, 8 and 9 mark the diagonal. What is the probability that a randomly selected point within the rectangle is closer to the diagonal than any side of the rectangle? - Raffle
In the pool number from 1 to 115. What is the probability that a randomly selected number is not a prime number? - Insurance
The house owner is insured against natural disasters and pays 0.04% annually of the value of the house 76 Eur. Calculate the value of the house. Calculate the probability of disaster if you know that 41% of the insurance is to pay damages. - Two doctors
Doctor A will determine the correct diagnosis with a probability of 89% and doctor B with a probability of 75%. Calculate the probability of proper diagnosis if both doctors diagnose the patient.
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