• Views : 30k+
• Sol Viewed : 10k+

# Mind Teasers : Probability Brain Teaser Question

Difficulty Popularity

You are standing on the verge of making a fortune. You have fifty precious stones and fifty non-precious stones. You are provided with two bags labelled as Heads and Tails respectively. What you have to do is distribute the stones in these two bags. After that a coin will be flipped and what comes (heads or tails) will decide you will pick up a stone randomly from which bag.

How will you be distributing the stones so that you maximize the probability of picking up a precious stone? If you pick it, all precious stones will be yours.

Discussion
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• Views : 70k+
• Sol Viewed : 20k+

# Mind Teasers : Unlock The Distance Puzzle

Difficulty Popularity

Distances from you to Man united is written below.

CHELSEA and ARSENAL are 700 kms away
SPURS 1800 kms away
WOLVES 200 kms away

Based on the system , How far should it be to MANCITY ?

• Views : 50k+
• Sol Viewed : 20k+

# Mind Teasers : Logic Number Sequence Puzzle

Difficulty Popularity

Solve this logic number sequence puzzle by the correct digit
8080 = 6
1357 = 0
2022 = 1
1999 = 3
6666 = ?

• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Playing Cards Logic Riddle

Difficulty Popularity

Dr. Watson has a new card puzzle for Sherlock Holmes. He picks four cards out of the pack of 52 cards and lays them face down on the table. He offers four hints to Sherlock.
1) The left card can’t be greater than the one on right.
2) The difference between the first card and third card equals to eight.
3) None of the Ace is present
4) No face card has been included i.e. no queen king and jacks.
5) The difference between the second and fourth card is 7.
Sherlock smiles and tells all the four cards to Dr. Watson.

Can you tell the four cards?

• Views : 50k+
• Sol Viewed : 20k+

# Mind Teasers : Math Number Riddle

Difficulty Popularity

A man wanted to get into his work building, but he had forgotten his code. However, he did remember five clues. These are what those clues were:

The fifth number plus the third number equals fourteen.

The fourth number is one more than the second number.

The first number is one less than twice the second number.

The second number plus the third number equals ten.

The sum of all five numbers is 30.

What were the five numbers and in what order?

• Views : 60k+
• Sol Viewed : 20k+

# Mind Teasers : Awesome Probability Logic Riddle

Difficulty Popularity

You need to divide 50 marbles(25-red and 25-blue) into two boxes such that the probability of picking red marble is maximized.

Following conditions need to hold true :
1. None of box is empty
2. All the marbles must be in one of two boxes.

• Views : 40k+
• Sol Viewed : 10k+

# Mind Teasers : Trick Answer Riddle

Difficulty Popularity

In Era of Abraham Lincoln, there is a world famous surgeon whose more than 90% surgeries are successful and yet almost all of his patients die.

Explain ?

• Views : 60k+
• Sol Viewed : 20k+

# Mind Teasers : Trick Interesting Maths puzzle

Difficulty Popularity

There are three cars in a racing track. The track is made forming a perfect circle and is quite wide so that at one time, multiple cars can pass through it. The car which is leading is driving at 55 MPH and the slowest car is driving at 45 MPH. The car that is in middle of these two is driving in between the two speeds. For the time being you can say that the distance between the fastest car and the middle car is x miles and it is same between the middle car and the slowest car. Also, x is not equal to 0 or 1.

The car keeps running till the leading car catches up with the slowest car and then every car stops. Given the case, do you think that at any point, the distance between any two pairs will again become x miles?

• Views : 80k+
• Sol Viewed : 20k+

# Mind Teasers : Hard Logical Puzzle

Difficulty Popularity

You are the ruler of a medieval empire and you are about to have a celebration tomorrow. The celebration is the most important party you have ever hosted. You've got 1000 bottles of wine you were planning to open for the celebration, but you find out that one of them is poisoned.

The poison exhibits no symptoms until death. Death occurs within ten to twenty hours after consuming even the minutest amount of poison.

You have over a thousand slaves at your disposal and just under 24 hours to determine which single bottle is poisoned.

You have a handful of prisoners about to be executed, and it would mar your celebration to have anyone else killed.

What is the smallest number of prisoners you must have to drink from the bottles to be absolutely sure to find the poisoned bottle within 24 hours?

• Views : 70k+
• Sol Viewed : 20k+

# Mind Teasers : King Gift Puzzle

Difficulty Popularity

King Charles want to send the diamond ring to his girlfriend securely.He got multiple locks and their corresponding keys.His girl friend does not have any keys to these locks and if he send the key without a lock , the key can be copied in the way.How can charles send the ring to his girl friend securely .

• 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?

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