• Views : 70k+
  • Sol Viewed : 20k+

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 ?

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

Mind Teasers : The Elf Logical Puzzle

Difficulty Popularity

A wicked sorcerer felt enmity towards elf and thus he chooses four among the rest of the elf's and concealed them. The elves are concealed in the ground in a manner that apart from their head the rest of their body was underneath the ground. The elf's are unable to move their body and can only see in that direction that they are facing. All the elf's are concealed underground in such a way that they form a straight line and among those four elf's that are concealed underground one of the elf is detached form the other three elf's via wall. The entire elf's are in the same direction. The elf that is the furthest can only see the heads of its friends in front and a wall. The elf that is second last can only see one head of his friend and a wall. The second elf can only view the wall. The elf can see nothing.
The sorcerer understands the situation and tells the elf's that he has placed hats over their heads. Among the hats places two hat are blue and the other two are red. Among all the four elfs one of the elf has to guess that which colour hat is he wearing. If the elf answers correctly then he shall be set free or else he will have to dig beneath the ground till the very last.

  • Views : 50k+
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Mind Teasers : Truth Or Lie Brain Teaser

Difficulty Popularity

Zoe and Joe are twin brothers. One of them is a falsifier however the other one always speaks truth. I asked one of the, “Does Zoe lie?” The person replied with a yes.

Whom did I talk with? Zoe or Joe?

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

Mind Teasers : Logical Bank Brain Teaser

Difficulty Popularity

A bank customer had Rs.100 in his account. He then made 6 withdrawals, totaling Rs.. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
Rs.50 Rs.50
Rs.25 Rs.25
Rs.10 Rs.15
Rs.8 Rs.7
Rs.5 Rs.2
Rs.2 Rs.0
Rs.100 Rs.99


Why are the Totals not exactly right ?

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

Mind Teasers : Riddle 1 - 1 !=3

Difficulty Popularity

Can you move four matchsticks to make the equation true?

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

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?

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

Mind Teasers : Unique Brain Teaser

Difficulty Popularity

It takes ten minutes to fry a steak (five minutes for each side). You are frying the steaks in a pan that can accommodate only two steaks at one time. What is the least amount of time by which you can fry all the three steaks you have?

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

Mind Teasers : Smartest Phone Brain Teaser

Difficulty Popularity

Armed robbers invaded a bank. They were busy looting when suddenly a phone rang. The phone happened to be at the reception. One of the robber asked the receptionist to attend the call and talk without giving away the situation. The call happen to be from her mother. She spoke, 'Do you have any emergency mom? Can you give me a call when I get home, I could really use your help in buying new curtains?' Then she hangs up.

The robbers are busy when the police arrives suddenly along with the mother of the receptionist. How did she know about the robbery?

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

Mind Teasers : Eight Eights Brain Teaser

Difficulty Popularity

Using eight eights and addition only, can you make 1000?

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

Mind Teasers : Measuring Time Logic Puzzle

Difficulty Popularity

You are given with two ropes with variable width. However if we start burning both the ropes, they will burn at exactly same time i.e. an hour. The ropes are non-homogeneous in nature. You are asked to measure 45 minutes by using these two ropes.

How can you do it?

Please note that you can’t break the rope in half as it is being clearly stated that the ropes are non-homogeneous in nature.

By Admin
  • 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 ?

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