• Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Shortest Stupid Riddle

Difficulty Popularity

Why river is considered so rich ?

Discussion
Suggestions
  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Perfect Number Maths Question

Difficulty Popularity

A perfect number is defined as a positive number(integer) which is equal to the sum of its positive divisors excluding the number itself.

two examples are mentioned below as :
6 => 1+2+3
12=> 1+2+3+6


Can you find another perfect number which consist of <= 2digits.

  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Induction Brain Teasers

Difficulty Popularity

Three college toppers are summoned by the inspecting faculty. To identify the best from them, the faculty takes them into a room and places one hat on each of their heads. Now all of them can see the hats on other’s heads but can’t see his own. There are two colored hats – green and red.

Now the faculty announces that he had made sure that the competition is extremely fair to all three of them. He also gives them a hint that at least one of them is wearing a red hat. Now the first one who is able to deduce his own hat color will be awarded the most intelligent student of all award. After a few minutes, one of them raises his hand and is able to deduce the color correctly.

How?

  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Fake Coin Brain Teaser

Difficulty Popularity

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

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

Mind Teasers : Unsolvable Problem

Difficulty Popularity

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Changed Password Trick Teaser

Difficulty Popularity

On a random day , i was not able to logged-in with my bank password , so i contacted them on phone.
Our conversation is stated as :

myself : My password is altered.
myself : I am not able to logged-in.
customer-executive : Your password is distinct this time and it got 8 letters , out of which 2 are same of your previous password.
myself: Thanks , now i am able to logged-in.

Whats my old and new passwords ?

By Admin
  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Measure Water Supply Brain Teaser

Difficulty Popularity

You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Popular Probability Brain Teaser

Difficulty Popularity

Kangwa, Rafael and Ferdinand plans for gun fighting.
They each get a gun and take turns shooting at each other until only one person is left.

History suggest
Kangwa hits his shot 1/3 of the time, gets to shoot first.
Rafael, hits his shot 2/3 of the time, gets to shoot next if still living.
Ferdinand having perfect record at shooting(100% accuracy) shoots last , if alive.

The cycle repeats. If you are Kangwa, where should you shoot first for the highest chance of survival?

By Admin
  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Popular Castle History Puzzle

Difficulty Popularity

A square island comprised of a square castle. A 14m wide trench surrounded the island from everywhere. Roman Empire wanted to invade the castle and gain the loot as well as possession of the island. They brought along wooden planks to cross the trench. However, they realized that the planks were just 13m long.

How did they use those planks to invade as well as capture the island ?

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

Mind Teasers : Best Picture Brain Teaser

Difficulty Popularity

Seeing the picture, can you identify in which direction is it going - left or right?

Keep in mind that the bus is moving in UK

  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Smart Trick Puzzle

Difficulty Popularity

A local magician is performing his favorite trick to be under water for approx 10 minutes.

I went to the magician and told him that i can be under the water for 20 minutes.
He laughed and den responded "I will give you 1000 pounds , if you can do this"

I won the bet and get 1000 pounds.

what did i do ?

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