• Views : 30k+
  • Sol Viewed : 10k+

Mind Teasers : Union Intersection Math Problem

Difficulty Popularity

In a college, 70 percent of students study math, 75 percent of students study English, 85 percent study French and 80 percent study German.

Can you find out the percentage of students who study all 4 subjects ?

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

Mind Teasers : Short Story Mystery Puzzle

Difficulty Popularity

A Japanese ship was making its way through the Arabian Sea. The captain felt like taking a bath and thus went to the bathroom after removing his Rolex watch and gold bracelet. When he returned back from the bathroom, he found out that his valuables were missing.

He suspected five of his crew members. He called them in and asked all of them what they were doing for the last 15 minutes. They replied as follows:parachute
The French cook (with a butcher knife): I was in fridge room getting meat for cooking.
The German Engineer (with some tools in hand): I was working on the generator engine.
The Bangladeshi seaman (empty handed): I was on the mast correcting the flag which was upside down by mistake.
The American Radio officer (with his headphones in hand): I was messaging to company that we will reach the port in the next two days that is Friday morning at 1100 hrs.
The Indian navigation officer (empty handed): I was taking a nap before my night watch began.

Upon hearing all of them, the captain found out who was the thief. How did he know that? Who is the thief?

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

Mind Teasers : Logic Interview Riddle

Difficulty Popularity

prinka and tanu organized a small kitty party at home. They purchased a barrel of fruit juice.

Tanu told to prinka 'I bet this barrel of fruit juice is more than half full'.
'No, its less than half full' prinka replied.

I don't have any measuring instrument and without removing fruit juice from it , how can i determine which of us is right ?

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

Mind Teasers : What Do you See - Brick Optical Illusion Riddle

Difficulty Popularity

What except brick can you see in the picture below?

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

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?

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

Mind Teasers : Confusing Logical Question

Difficulty Popularity

Sweety have got some Pink and green sock in her drawer.
she had got total of 4 socks.
She pick 2 socks and chances that she get a pair of green socks is 1/2.

What is the chance of her picking a pair of Pink socks ?

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

Mind Teasers : Box Ball Logic Problem

Difficulty Popularity

There are three bags.The first bag has two blue rocks. The second bag has two red rocks. The third bag has a blue and a red rock. All bags are labeled but all labels are wrong.You are allowed to open one bag, pick one rock at random, see its color and put it back into the bag, without seeing the color of the other rock.

How many such operations are necessary to correctly label the bags ?

  • 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?

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

Mind Teasers : Popular Logical Brain Teaser

Difficulty Popularity

A couple had to take shelter in a hotel for they could not proceed their journey in the rain. Having nothing to do at all, they started playing cards. Suddenly there was a short circuit and the lights went off. The husband inverted the position of 15 cards in the deck (52 cards normal deck) and shuffled the deck.

Now he asked his wife to divide the deck into two different piles which may not be equal but both of them should have equal number of cards facing up. There was no source of light in the room and the wife was unable to see the cards.

For a certain amount of time, she thought and then divided the cards in two piles. To the husband’s astonishment, both of the piles had equal number of cards facing up.

How did she do it?

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

Mind Teasers : Nice Mathematics Riddle

Difficulty Popularity

Aishwarya Rai walks into a bank to cash out her check.
By mistake the bank teller gives her dollar amount in change, and her cent amount in dollars.
On the way home she spends 5 cent, and then suddenly she notices that she has twice the amount of her check.

How much was her check amount ?

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

Mind Teasers : Logical Interview Problem

Difficulty Popularity

Jonathan has three boxes containing milk chocolates and dark chocolates. The problem is that all of them have been labeled incorrectly as follows.
Box1: Dark Chocolates
Box2: Milk Chocolates
Box3: Dark Chocolates and Milk Chocolates

How will he label all the boxes correctly by just opening one box?

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