• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Hard Probability Brain Teaser

Difficulty Popularity

There are two houses - House P and House Q. In both P and Q lives a family with two children each.

The House P has a family with a boy who loves to play football. Their other child likes to swim.

The house Q has a family with a six year old boy who loves to read and they have just had a new baby.

You are asked:
Which of the given houses is likely to have a girl child?

What will you answer?

Discussion
Suggestions
• Views : 60k+
• Sol Viewed : 20k+

# Mind Teasers : IAS Interview Problem

Difficulty Popularity

I need to divide numbers from 1 to 9 into two group such that sum of numbers in one group is equal to the sum of other group.
Note : 6 cannot be flipped over to make it 9.

• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Sherlock Holmes Murderer Mystery Puzzle

Difficulty Popularity

There are five people. One of them shot and killed one of the other five.

1. Dan ran in the NY City marathon yesterday with one of the innocent men.
2. Mike considered being a farmer before he moved to the city.
3. Jeff is a topnotch computer consultant and wants to install Ben's new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Sherlock holmes arrived at the scene and immediately find the murderer.

who was the murderer ?

• Views : 60k+
• Sol Viewed : 20k+

# Mind Teasers : Logical Marble Riddle

Difficulty Popularity

There is a box which have 33 yellow marbles and 35 green marbles. You also have 34 green marbles outside the box.

Randomly remove two marbles from the box.
* If they are of different colors, put the yellow one back in the box.
* If they are the same color, take them out and put a green marble back in the box.

Repeat this until only one marble remains in the box.

What is the color of the sole marble left in the box ?

• Views : 40k+
• Sol Viewed : 10k+

# Mind Teasers : What Do you See - Brick Optical Illusion Riddle

Difficulty Popularity

What except brick can you see in the picture below?

• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Box Ball Logic Problem

Difficulty Popularity

There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.

How many such operations are necessary to correctly label the bags ?

• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Popular Logic Brain Teaser

Difficulty Popularity

A girl liked to collect money in a piggy bank. She bought pink colored piggy bank when she was 10 years old. She put \$250 in the box on each of her birthday. Her younger sister took \$50 out of her piggy bank on her birthday. The girl died when she was 50 years old due to an incurable disease.

When the piggy bank was opened, it had just \$500. How can that be possible?

• Views : 60k+
• Sol Viewed : 20k+

# Mind Teasers : Brain Teasing Statement Puzzle

Difficulty Popularity

The question is simple, you have to find out who did it? However the way to the solution might be tricky and confusing. Just remember that only one of the statement is true and rest three are false.

1. Ms. Rihanna: 'Ms. Britney did it.'
2. Ms. Britney: 'Ms. Rihanna did it.'
3. Ms. Gwyneth: 'Ms. Britney’s telling the truth.'
4. Ms. Yoon: 'Ms. Gwyneth’s not lying.'

• Views : 90k+
• Sol Viewed : 30k+

# Mind Teasers : Tough Two Jug Measuring Puzzle

Difficulty Popularity

I got two jugs of
A) 11 liter
B) 6 liter

How can I measure exactly 9 liters ?

• Views : 70k+
• Sol Viewed : 20k+

# Mind Teasers : Picture Mind Teaser

Difficulty Popularity

You are given with six marbles of three different colors. Arrange them in a manner that each one of them touches all four marbles of different colors.

• Views : 40k+
• Sol Viewed : 10k+

# Mind Teasers : CheckMate All Kings Chess Puzzle

Difficulty Popularity

Can you checkmate all the kings in less than 10 moves?

Following are the rules:
1. White can make up to 10 legitimate moves until all kings are checkmate.
2. You can take any black piece(s) except the King.
3. Your king cannot be in check position at any time of the game.

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