50 questions on probability for you to try out.

Probability is a measure that quantifies the likelihood of a specific event occurring. It's a branch of mathematics that deals with analyzing and predicting uncertain events by assigning a numerical value between 0 and 1 to the likelihood of an outcome, where 0 indicates impossibility and 1 indicates certainty.

1. A fair coin is flipped three times. What is the probability of getting at least one head?
2. If you roll a fair six-sided die, what is the probability of getting an even number?
3. In a deck of 52 cards, what is the probability of drawing a face card (king, queen, or jack)?
4. A jar contains 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of drawing a blue marble?
5. If the probability of event A is 0.3 and the probability of event B is 0.5, what is the probability of both events occurring if they are independent?
6. What is the probability of rolling a total of 7 with two fair six-sided dice?
7. A bag contains 4 white balls, 3 black balls, and 5 red balls. What is the probability of drawing a white ball?
8. If you randomly select a letter from the word “PROBABILITY”, what is the probability that it’s a consonant?
9. In a group of 50 people, 30 are women. What is the probability of randomly selecting a man from the group?
10. Two cards are drawn without replacement from a standard deck of cards. What is the probability that both cards are hearts?
11. A box contains 6 green marbles and 4 blue marbles. What is the probability of drawing a blue marble and then a green marble without replacement?
12. What is the probability of getting tails on the third flip of a fair coin if the first two flips were heads?
13. A standard deck of 52 cards is shuffled. What is the probability of drawing a spade or a queen?
14. If the probability of rain on any given day is 0.3, what is the probability of no rain for two consecutive days?
15. In a bag, there are 3 yellow balls, 5 red balls, and 2 green balls. What is the probability of drawing a yellow ball or a green ball?
16. A spinner is divided into 6 equal parts, numbered 1 through 6. What is the probability of landing on a multiple of 3?
17. If you roll two fair six-sided dice, what is the probability that the sum of the numbers rolled is greater than 9?
18. In a bowl, there are 8 strawberries, 4 bananas, and 3 oranges. What is the probability of picking a banana?
19. A box contains 20 chocolates, of which 5 are dark chocolates. What is the probability of getting a dark chocolate if two chocolates are picked randomly?
20. What is the probability of drawing two aces in a row from a well-shuffled deck of cards?
21. If the probability of winning a game is 0.6, what is the probability of losing the game?
22. A box contains 7 red balls and 5 green balls. What is the probability of drawing a red ball followed by a green ball without replacement?
23. If you toss a fair coin four times, what is the probability of getting at least three heads?
24. In a bag, there are 6 black socks, 4 white socks, and 2 blue socks. What is the probability of drawing a white sock?
25. What is the probability of rolling two fair six-sided dice and getting a sum less than or equal to 4?
26. A jar contains 8 red marbles, 3 blue marbles, and 5 green marbles. What is the probability of not drawing a blue marble?
27. If the probability of event A is 0.7 and the probability of event B is 0.4, what is the probability of either event A or event B occurring?
28. Two cards are drawn without replacement from a standard deck of cards. What is the probability that the first card is a heart and the second card is a spade?
29. What is the probability of rolling a number greater than 4 on a fair six-sided die?
30. In a class of 40 students, 25 are boys. What is the probability of randomly selecting a girl from the class?
31. If the probability of winning a raffle is 0.1, what is the probability of losing the raffle?
32. A bag contains 5 green balls, 4 yellow balls, and 3 blue balls. What is the probability of drawing a green ball or a yellow ball?
33. What is the probability of rolling a multiple of 2 or a multiple of 3 on a fair six-sided die?
34. In a deck of cards, what is the probability of drawing a black card or a face card?
35. If you toss a fair coin three times, what is the probability of getting exactly two tails?
36. A box contains 12 pencils, of which 4 are red and 8 are blue. What is the probability of picking a blue pencil?
37. If the probability of event A is 0.2 and the probability of event B is 0.3, what is the probability of both events occurring if they are independent?
38. Two cards are drawn with replacement from a standard deck of cards. What is the probability that both cards are spades?
39. A jar contains 7 red marbles, 5 blue marbles, and 4 green marbles. What is the probability of drawing a red marble or a blue marble?
40. If you roll two fair six-sided dice, what is the probability that the sum of the numbers rolled is 7 or 11?
41. In a bag, there are 4 white balls, 3 black balls, and 6 red balls. What is the probability of drawing a black ball or a white ball?
42. What is the probability of drawing a heart or a club from a well-shuffled deck of cards?
43. If the probability of event A is 0.4 and the probability of event B is 0.6, what is the probability of either event A or event B occurring?
44. A box contains 10 red marbles and 8 blue marbles. What is the probability of drawing a red marble and then another red marble without replacement?
45. What is the probability of rolling an odd number on a fair six-sided die?
46. If you randomly select a letter from the word “PROBABILITY”, what is the probability that it’s a consonant or a vowel?
47. A spinner is divided into 4 equal sections, labeled A, B, C, and D. What is the probability of landing on section A or section C?
48. In a deck of 52 cards, what is the probability of drawing a heart or a diamond?
49. If the probability of event A is 0.3 and the probability of event B is 0.4, what is the probability of neither event A nor event B occurring?
50. A bag contains 6 red balls, 3 blue balls, and 5 green balls. What is the probability of drawing a blue ball followed by a green ball without replacement?

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