Medium difficulty brain teasers and puzzles
In Honkai: Star Rail, one side quest takes you to solve a number of puzzles involving cycranes, including one fun and tricky Dissatisfied Cycrane truth and lie riddle!
Continue reading “Honkai Star Rail Dissatisfied Cycrane Truth and Lie Riddle”“I either can only tell the truth, can only tell lies, or must say a lie after a truth. You can only ask two questions, and then I’ll ask for your answer.”
—Dissatisfied Cycrane
Honkai: Star Rail is the latest mobile game by the creators of Genshin Impact, and shortly into your gameplay, you’ll run into the Ministry of Education quiz as part of your daily quest. Over the course of multiple daily quests, you’ll run into a mix of math and logic puzzles – here are the Honkai Star Rail Ministry of Education quiz answers, with explanations!
Continue reading “Honkai Star Rail Ministry of Education Quiz Answers”
The shaded rectangle is tangent to the circle at the two points indicated, and its bottom right corner lies on the circumference of that circle. What is the area of the rectangle?
Continue reading “Area of the Rectangle”You are on a game show in which there are three identical doors, one with a car behind it and two with goats behind them. You must pick one door, and you win if that door has the car behind it.
After you pick a door, the host of the game show always opens a door you didn’t choose that has a goat behind it. This leaves the door you chose and one other remaining door, and you are given the option to switch your choice to the other remaining door.
Should you switch or should you stick to your original choice? What chance of winning would that give you?
The Monty Hall Problem is a classic probability puzzle, named for its similarity to the game show “Let’s Make a Deal”, which was hosted by Monty Hall. The problem was made famous when Marilyn vos Savant answered it correctly in her column in a popular magazine, and thousands of readers wrote letters to the magazine arguing her solution was wrong!
The solution can be counter-intuitive, so give it some thought and then scroll down to see the Monty Hall Problem explained.
Continue reading “The Monty Hall Problem Explained”In matchstick puzzles, you are presented with an incorrect equation made using matchsticks, and you must move 1 or more matchsticks to turn it into a valid equation.
You must use all of the matches, and you are not allowed to make an inequality symbol such as ≠, ≥, >, <, or ≤.
In each of these 7 fun matchstick equation puzzles, move exactly 1 match to fix the equation:
7 + 2 = 9
There is a bag with 20 blue balls and 13 red balls. Randomly remove 2 balls from the bag:
Repeat this process until there is just 1 ball remaining. What is the color of the last ball?
Continue reading “Color of the Last Ball”Prove that for all prime numbers p > 3, (p2 – 1) is a multiple of 24.
Continue reading “Multiple of 24”There is a long line of people waiting to see a new movie. They announce that the first person to have the same birthday as someone standing before them in the line gets to meet one of the actors in the movie.
What place in line would maximize your chances of winning? Assume birthdays are uniformly distributed through the year.
Continue reading “Same Birthday in Line”The digital sum of a number is just the sum of the individual digits. E.g., the digital sum of 123 is 1 + 2 + 3 = 6.
What is the digital sum of z = x + y?
Continue reading “Digital Sum of the Sum”