Brain Teasers & Puzzles
-
You have two jars, 50 red marbles and 50 blue marbles. You need to place all the marbles into the jars such that when you blindly pick one marble out of one jar, you maximize the chances that it will be red. When picking, you’ll first randomly pick a jar, and then randomly pick a marble out of that jar. You can arrange the marbles however you like, but each marble must be in a jar.
View SolutionSubmit Solution- 1,622.5K views
- 1 answers
- 0 votes
-
Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
View SolutionSubmit Solution- 1,623.9K views
- 1 answers
- 0 votes
-
Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?
View SolutionSubmit Solution- 1,623.3K views
- 2 answers
- 0 votes
-
100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say “Every prisoner has been in the special room at least once”. If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?
View SolutionSubmit Solution- 1,623.8K views
- 1 answers
- 0 votes
-
A certain town comprises of 100 married couples. Everyone in the town lives by the following rule: If a husband cheats on his wife, the husband is executed as soon as his wife finds out about him. All the women in the town only gossip about the husbands of other women. No woman ever tells another woman if her husband is cheating on her. So every woman in the town knows about all the cheating husbands in the town except her own. It can also be assumed that a husband remains silent about his infidelity. One day, the mayor of the town announces to the whole town that there is at least 1 cheating husband in the town. What do you think happens?
View SolutionSubmit Solution- 1,631.4K views
- 1 answers
- 2 votes
More puzzles to try-
Raining at midnight puzzle
It’s raining at midnight. Will there be sunny weather in 72 hours?Read More »Pizza Price with Toppings
In a pizza parlour, you have to pay a certain amount to add extra toppings. Now the price for toppings ...Read More »Filling Box
Sam keeps marbles in a box everyday in such a way that the number of marbles in the box doubles ...Read More »Birthday Puzzle
Once Akbar asked prisoner to ask anything from Birbal, If Birbal fails Prisoner will be made free. Prisoner asked- Two ...Read More »Police not charging truck driver puzzle
A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try ...Read More »Horse, Car & Helicopter riddle
You are riding a horse. In front of you, there is a fire engine. A helicopter is following you. To ...Read More »Dogs and Food Riddle
During a recent research project, again with the JD associates, leading experts determined that three-legged dogs eat less food than ...Read More »Rocking Chair
What we call when we combine roller skates & a rocking chair.Read More »4 Weight bars to weigh given wieght puzzle
You have to take 4 weight bars (all of integer values). Using only those 4 bars you can weight all ...Read More »Who is Kidnapper
Can you find out who is the kidnapper in below Picture ?Read More »Depends on strength
It has many feathers to help it fly. It has a body and head, but it is not alive. This ...Read More »Letter E is lazy
Why is the letter E lazy ?Read More »Lateral thinking sequence Puzzle
Solve this logic sequence puzzle by the correct digit- 8080 = 6 1357 = 0 2022 = 1 1999 = ...Read More »Old is Gold
This is the oldest riddle that I have heard. Once there was a man who was travelling with a Tiger, ...Read More »Democrats and Republicans Riddle
What is the one thing common which is shared by both Democrats and Republicans?Read More »Black when clean riddle
I am black when clean and white when dirty. What am I?Read More »Odd in Group
Below are set of four words, one of which does not belong with the other three. Which word does not ...Read More »Jenny’s boxes nriddle
Jenny has boxes in three sizes: large, standard, and small. She puts 11 large boxes on a table. She leaves ...Read More »Suicide Mystery Riddle
A man 5’11” high is found dead in a closed room. This room is found empty with some puddle of ...Read More »Computer terminology Riddle
I am an eight letter word and I am a computer terminology. The second, third and fourth letters make an ...Read More »
