Mind Teasers : Chemistry Lab Riddle

Difficulty Popularity

Dalton was working in his chemistry lab and created a mixture whose weight is contributed by 90% water and 10% Carbon. The weight of the mixture is 20pounds. As he just finished creating the mixture, Dalton needs to go urgently for some urgent work for 2days. When he returned, the weight of water in the mixture was reduced from 90% to 50%.

How much does the mixture weigh now?

category : SCIENCE


Mind Teasers : IPS Tricky Interview Puzzle

Difficulty Popularity

Jamie looked at his reflection on the window mirror of the 45th floor. Driven by an irrational impulse, he made a leap through the window on the other side. Yet Jamie did not encounter even a single bruise.

How can this be possible if he did neither landed on a soft surface nor used a parachute?

Mind Teasers : Nine Coins Picture Puzzle

Difficulty Popularity

Nine coins are arranged in a triangle as shown in the picture below. You need to slide two triangles to form a square. Can you do it?

category : LOGIC | PICTURE

Mind Teasers : Hard MatchStick Problem

Difficulty Popularity

You can see five identical squares made with blue matchsticks in the given figure. You have to make them six identical squares instead. To do that, you are only allowed to move three matchsticks. How will you achieve the desired result?

Mind Teasers : Trick Relationship Riddle

Difficulty Popularity

If Erica's daughter is my daughter's mom, who am I to Erica?

Mind Teasers : Maths Magic - Square Root 12345678987654321 Brain Teaseer

Difficulty Popularity

We all know that square root of number 121 is 11.
But do you know what si the square root of the number "12345678987654321" ?
category : LOGIC | MATHS

Mind Teasers : Climbing Top Brain Teaser

Difficulty Popularity

A man is trying to climb over a frozen mountain that is sixty feet high. Every minute, he can climb 3 feet, but due to the slippery ice, he slips back 2 feet.

How long will it take him to reach the top of the mountain?
category : LOGIC | TRICK

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?
category : LOGIC

Mind Teasers : Harry Potter And Prisonor of Azkaban Riddle

Difficulty Popularity

Think of a person living in a disguise
The one who also deals in secrets and speaks nothing other than lies
Now think of a thing that's always the last to mend
What's the middle of the middle and also the end of the end?
Now think of the sound that you have often heard
When you were searching for a difficult-to-find word
Now if you can join them together and you can answer this
Which creature would you be reluctant to kiss?

Mind Teasers : Simple Logic Shape Riddle

Difficulty Popularity

Can you place ten balls in five lines in a manner that each line has exactly four balls in it ?
category : LOGIC

Mind Teasers : Guard Door Riddle

Difficulty Popularity

You are in a strange place which is guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there.
What should you ask?
category : LOGIC | TRICK

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