Quiz Answer Key and Fun Facts
1. In a ten question multiple choice (4 options) quiz on FunTrivia, you have a chance of roughly 0.0000954% to get all ten questions right guessing at random. How is this number calculated?
2. I like Brain Teasers, so I play Brain Twist three days in a row. If the chance that I will 'pass' Brain Twist (by getting at least half of the questions right) is 0.5, what is the chance that I will pass Brain Twist on at least two of those three days?
3. Lucky Ducky is a badge awarded to a random user who visits FunTrivia every day. If 100,000 players visit FunTrivia on one day, including myself, what is the chance that I will win the badge?
4. The game Word Wizard gives players six possible answers for each question. In a game I play, I am 75% certain that I know the answer to the first question and the second question I guess at random. What is the probability that I have got at least one of these two questions right?
5. There's a minibadge called "Zero" awarded to anyone who gets 0/15 in the multiple choice game Obscurity. Each question has four possible options. Guessing all 15 questions at random, what is the chance that I will get every single one of them wrong?
6. Every time I play Piece of Cake I have a 1 in 10 chance of getting the highest score in my set. If I play Piece of Cake seven times, the chance that I will get the highest score in my set at least once is 70%.
7. Let's say that the chance of a random person getting over 800 points in Mixed Trivia is 2/5. If someone gets over 800 points in Mixed Trivia, there is a 3/5 chance that they will get over 800 points in Who's the Smartest? What is the chance that a player picked at random will get over 800 points in both games?
8. There are twenty main categories in which FunTrivia quizzes can be placed (e.g. Animals, Sci/Tech). Assuming that the probability of a quiz going in each category is equally likely, what is the chance that the two newest quizzes on the site will be in the same category?
9. In a certain subcategory, the ratio of normal quizzes to photo quizzes is 4:1. What is the chance that a quiz picked at random will be a photo quiz?
10. In the Daily Trivia Game, I have a 5% chance of getting 20 out of 20. I have a 15% chance of getting at least 19 questions right and a 10% chance of getting exactly 18 questions right. What is the probability that I will get less than 18/20?
Source: Author
AdamM7
This quiz was reviewed by FunTrivia editor
rossian before going online.
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