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A school teacher was worried as the school superintendent was scheduled to visit the next day. He would definitely ask mental arithmetic from the class and she will have to pick a student for answering. The problem that persisted was not all students of her class were intelligent and she wanted to put a perfect impression on the superintendent. Suddenly she came up with an idea that relieved her of the stress. She went to her class and told students something that will maximize the chances of picking the right student.

What was her idea?

What was her idea?

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Difficulty Popularity

Solve this logic number sequence puzzle by the correct digit

8080 = 6

1357 = 0

2022 = 1

1999 = 3

6666 = ?

8080 = 6

1357 = 0

2022 = 1

1999 = 3

6666 = ?

Difficulty Popularity

UNO plans a gathering.

However there is threat of terrorist attack. So security guard who is a mathematical plans somethings to secure the place.

A terrorist stands nearby the door where

1st ambassador comes , the security guard said 'twelve' and ambassador replied with 'six'.

2nd ambassador comes , the security guard said 'six' and ambassador replied with 'three'.

The terrorist thinks its enough and walks to the door.

The security person said 'eight' , terrorist replied 'four' and get immediately arrested.

why ?

However there is threat of terrorist attack. So security guard who is a mathematical plans somethings to secure the place.

A terrorist stands nearby the door where

1st ambassador comes , the security guard said 'twelve' and ambassador replied with 'six'.

2nd ambassador comes , the security guard said 'six' and ambassador replied with 'three'.

The terrorist thinks its enough and walks to the door.

The security person said 'eight' , terrorist replied 'four' and get immediately arrested.

why ?

Difficulty Popularity

A terrorist hijacks a plane with 10 passengers and there is lots of gold in the plane.

After talking the gold , he asked the government officials for 11 parachutes.

He killed all the passenger so that no one can identify him , take one parachute and jumps off.

Was he stupid to ask for 11

parachutes if he need only one ?

After talking the gold , he asked the government officials for 11 parachutes.

He killed all the passenger so that no one can identify him , take one parachute and jumps off.

Was he stupid to ask for 11

parachutes if he need only one ?

Difficulty Popularity

A person has uncovered a secret that was a mystery for ages. He transfers the data into his hard drive and encrypts the drive with a password. Then, he writes a line on a paper to remember the password.

The line says 'You force heaven to be empty'.

Can you decrypt the line to reveal the password if you know that the password is seven characters long that comprise of just letters and numbers?

The line says 'You force heaven to be empty'.

Can you decrypt the line to reveal the password if you know that the password is seven characters long that comprise of just letters and numbers?

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Adam is one of the finalist in an IQ championship. As the final test, he is provided with two hourglass. One of them can measure eleven minutes while the other one can measure thirteen minutes.

He is asked to measure exactly fifteen minutes using those two hourglasses. How will he do it ?

He is asked to measure exactly fifteen minutes using those two hourglasses. How will he do it ?

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Can you identify the most common digit between the number 1 and 1000?

Difficulty Popularity

A homicide detective is called at a crime scene. A man is lying dead in front of the building and seeking the position of the windows on the building and the position in which the body is lying, it is evident that the man jumped out from one of them and committed suicide.

The detective asks his team to collect the traces if they can find any on the body and heads towards the building. He goes to the first floor and towards the room that is on the front side. Inside the room, he lights a cigarette, walks towards the window facing the dead body, opens the window and throws out the cigarette. He then goes to the second floor and repeats the same process.

He keeps doing the same thing till he is done with all the floors and then takes the lift to the ground floor. Upon reaching there, he informs the team that it is not a suicide but a murder.

While the whole team is shocked to hear the revelation, he lights another cigarette and takes a hard puff.

How do you think he found out that it was a not a suicide?

The detective asks his team to collect the traces if they can find any on the body and heads towards the building. He goes to the first floor and towards the room that is on the front side. Inside the room, he lights a cigarette, walks towards the window facing the dead body, opens the window and throws out the cigarette. He then goes to the second floor and repeats the same process.

He keeps doing the same thing till he is done with all the floors and then takes the lift to the ground floor. Upon reaching there, he informs the team that it is not a suicide but a murder.

While the whole team is shocked to hear the revelation, he lights another cigarette and takes a hard puff.

How do you think he found out that it was a not a suicide?

Difficulty Popularity

You are sitting in front of your interviewer. He gives you three envelopes. One of them contains an offer letter and the other two are empty. You pick up one of them. Now, the interviewer opens up one of the envelope lying on the table and you find out that it is blank.

Now, he gives you a chance to switch your envelope with the one on the table. Would you switch it? Why or why not?

Now, he gives you a chance to switch your envelope with the one on the table. Would you switch it? Why or why not?

Difficulty Popularity

A girl liked to collect money in a piggy bank. She bought pink colored piggy bank when she was 10 years old. She put $250 in the box on each of her birthday. Her younger sister took $50 out of her piggy bank on her birthday. The girl died when she was 50 years old due to an incurable disease.

When the piggy bank was opened, it had just $500. How can that be possible?

When the piggy bank was opened, it had just $500. How can that be possible?

Difficulty Popularity

There is a box full of fruits,

all but two are grapes,

all but two are apples,

and all but two are oranges.

How many fruits are in the box ?

all but two are grapes,

all but two are apples,

and all but two are oranges.

How many fruits are in the box ?

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