Mind Teasers : Hard Maths Expression Brain Teaser

Difficulty Popularity

If you are a genius, you can solve it easily.

Use three 9's in a mathematical expression such that it forms the number one. You are not allowed to divide or multiply them.
category : MATHS | EQUATION

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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 ?

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 : Interview Balls Puzzle

Difficulty Popularity

In a closed jar, there are three strawberry candies, two mango candies and five pineapple candies. You can't see inside the jar. Now, how many toffees you must take out from the jar to make sure that you have one of each flavor?
category : LOGIC

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 ?
category : LOGIC | MEASURE

Mind Teasers : Hard Logic Brain Teaser

Difficulty Popularity

There are 100 doors. 100 strangers have been gathered in the adjacent room. The first one goes and opens every door. The second one goes and shuts down all the even numbered doors – second, fourth, sixth... and so on. The third one goes and reverses the current position of every third door (third, sixth, ninth… and so on.) i.e. if the door is open, he shuts it and if the door is shut, he switches opens it. All the 100 strangers progresses in the similar fashion.

After the last person has done what he wanted, which doors will be left open and which ones will be shut at the end?
category : LOGIC

Mind Teasers : Smart Women Thinking Riddle

Difficulty Popularity

One man was moving to and fro in worry when a bright woman noticed him. On asking he told her that while replacing his tire, he incidentally dropped all the four nuts into a deep drain. She told him what to do and he was then able to drive back successfully till his office.

What did she say to him?
category : LOGIC | TRICK

Mind Teasers : Maths Logical Problem

Difficulty Popularity

The digits 0-9(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers.

How many of these numbers are prime ?

Mind Teasers : NewsPaper Riddle

Difficulty Popularity

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?
category : LOGIC

Mind Teasers : Classy Age Riddle

Difficulty Popularity

Dean Sam and Castiel are three brothers.
Interestingly their current age is prime.
What's more interesting that difference between their ages is also prime.

How old are they ?
category : LOGIC | MATHS

Mind Teasers : Whats The Temperature Rebus

Difficulty Popularity

Below rebus represents the current Temperature.

0
=========
B.Sc
LLB

What is the current Temperature ?
category : REBUS

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