Mind Teasers : God Planet Heat Who Am I

Difficulty Popularity

I am a god
I am a planet
I am a measure of heat

Who am I?

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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.
category : LOGIC | MATHS

Mind Teasers : Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

Mind Teasers : Deductive Logic Problem

Difficulty Popularity

A professor gives a set of three questions to the most brilliant students of his university. You can see the questions in the attached image if required. To his surprise, there are different answers by all three of them. Below are the answers by them:

Student A
1. Two
2. Six
3. Two

Student B
1. Two
2. Three
3. Infinity

Student C
1. One
2. Three
3. Two

Now you have the information that each one of them has given one answer wrong, can you find out the real answers to every problem?

category : LOGIC | PICTURE

Mind Teasers : Tricky Logic Question

Difficulty Popularity

A claustrophobic person boards a train that is just about to enter a tunnel.

Which place will be the best for him to sit?

Mind Teasers : Knockout Matches Logical Problem

Difficulty Popularity

Let us say that a table tennis tournament was going on with knock out terms which means the one who loses the match is out of the tournament. 100 players took part in that tournament.

How many matches were played?

Mind Teasers : Married UnMarried Looking Riddle

Difficulty Popularity

Terry Is looking at Millie
Millie is looking Stones
Terry is married while Stones is not.

So Is married person looking at an unmarried person?
A) Yes
B) No
C) Need more information.

category : LOGIC | TRICK

Mind Teasers : Best Thinking Brain Teaser Ever

Difficulty Popularity

Three men are living in a desert namely – Alex, Brian and Chris.

Alex hates Chris and thus he decides to kill him. To succeed in his evil intentions, he poison the water supply of Chris. Since they are living in desert, he will have to drink water or he will die of thirst.

Brian is not aware of the actions of Alex and he plans to kill Chris as well. To do this, he killed the water supply of Chris.

Chris dies due to his thirst. Who killed him?

Mind Teasers : Famous 13 Cave Logic Problem

Difficulty Popularity

A thief was running from the police after the biggest theft the town saw. He took his guard in one of the thirteen caves arranged in a circle. Each day, the thief moves either to the adjacent cave or stay in the same cave. Two cops goes there daily and have enough time to enter any two of the caves out of them.

How will the cop make sure to catch the thief in minimum number of days and what are the minimum number of days?
category : LOGIC

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 ?
category : LOGIC

Mind Teasers : Dirt Hole Tricky Riddle

Difficulty Popularity

How many cubic meters of dirt are in a hole of 20 meter long and 30 meter wide.

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