Adaptive Practice
Probability
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Easy
A fair six-sided die is rolled once. What is the probability of getting a number greater than 4?
Easy
A bag contains 5 red, 3 green, and 2 blue marbles. If one marble is drawn at random, what is the probability that it is green?
Easy
Two coins are tossed simultaneously. What is the probability of getting exactly one head?
Medium
In a class of 40 students, 25 play cricket and 18 play football. If 10 students play both cricket and football, what is the probability that a randomly selected student plays either cricket or football?
Medium
A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing a king or a heart?
Medium
A box contains 3 white, 4 black, and 5 red balls. Two balls are drawn at random without replacement. What is the probability that both balls are black?
Medium
A spinner is divided into 8 equal sectors numbered 1 to 8. What is the probability of the spinner landing on a prime number or an even number?
Hard
A die is rolled twice. What is the probability that the sum of the numbers obtained is 9?
Hard
From a pack of 52 cards, two cards are drawn one after the other without replacement. What is the probability that both are aces?
Hard
In a class, 60% of students passed in Mathematics and 70% passed in Science. If 50% passed in both subjects, what is the probability that a randomly selected student passed in Mathematics or Science?