• Brain Teasers & Puzzles

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• Let it be simple and as direct as possible.

Interviewer : Tell me how much time (in days) and money would you require to clean all the glasses of each and every building (which is obviously composed of glasses) of New York City including all the glasses at the top as well as at the bottom of all buildings. Also mention the calculations for your contract and the money you would mostly prefer to accomplish this task. Most importantly you and only you have to do this job (i.e. you can’t ask anyone else to clean the glasses for you). You can even separately mention the costing of cleaning the window glasses and fixed glasses from both the sides (i.e. from inside as well as outside.)

* Time allotted for the question (to think and analyse) is half-an-hour.
** This was the most tricky, diplomatic and mind-manipulating question asked at one of the interviews conducted by Google for a highly paid job.

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• 1,320.7K views

• Solve this logic sequence puzzle by the correct digit-

8080 = 6

1357 = 0

2022 = 1

1999 = 3

6666 = ?
Hint – Its not a mathematical arithmetic 😛

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• 1,319.6K views

• A man leaves his house in the morning to go to office and kisses his wife. In the evening on his way to home from office he sees that somebody cut the power line. He immediately knows his wife has died.

How did he know this?

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ketul Expert
• 1,321.8K views

• Jasmine, Thibault, and Noah were having a night out and decided to order a pizza for \$10. It turned out that Jasmine and Thibault were hungrier than Noah. They both ate 6 slices a piece, and Noah got to eat just 2 slices.

Now they want to do a fair split of money. The problem is that none of them have coins with them. Thus, they want to round off the cost to nearest dollar.

What will be the correct way to do it?

What if the pizza’s cost was \$11?

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• 1,286.9K views

• Which letter replaces the question mark

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• 1,283.4K views

• A murderer is condemned to death. He has to choose between three rooms.
The first is full of raging fires,
the second is full of assassins with loaded guns, and
the third is full of lions that haven’t eaten in 3 years.

Which room is safest for him?

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• 1,234.9K views

• Richie established a very strange number system.
According to her claim for different combination of 0 and 2 you will get only one value and it’s zero(0).
For clarity:
2         0           2
+0       +2        +2
—–   ——   —–
0          0          0
Now if Richie adds two numbers this way, she will get:

1200
+4005
————
0070
Observing this Richie’s friend Fariha realized Richie might hide some other relation between the digits.(It’s sure that according to the number system the digits are 0,1,2,3,4,5,6,7,8,9),and no other digits or symbols exist!!

Help Fariha. She want to establish the relations!!

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• 1,208.1K views

• The result of math class test came out.
Fariha’s mark was an even number.
Srabon got a prime!!
Nabila got an odd number.
The sum of the marks of Srabon and Nabila was less than the marks of Fariha.
The pass number was 33.
Total mark was 100.
How many ways were there so that Srabon got passed?

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• 1,207.4K views

• Robi is a very serious student.
On the first day of this year his seriousness for study was 1 hour.
But after that day he increases his seriousness for study everyday by 10 minutes!!
On the other hand Fariha is a very crazy girl!!
On the first day she showed her craziness to her parents for 2 hours!!
And everyday she decreases her craziness for 2 minutes.

Now can we find out on which date both Robi and Fariha will become normal again?

Notes:
1.His/her seriousness or craziness can’t be negative or more than 24 hours.
2.After the day, he/she become normal, he/she again starts to increase his/her seriousness/craziness.
3.Look on the first day Robi was normal but not Fariha.
4.When he/she reaches the limits he/she, all on a sudden, becomes normal.

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• 1,207.9K views

• Ragib: I got digits of a 2 digit number
Sakib: Is it an odd?
Ragib: Yes. Moreover, the sum of the digits of the number is a prime!
Sakib: The difference of the digits of the number is also a prime?
Ragib: Of course! Last of all, the multiply of the digits is equal to one of the digits!!
Sakib: Oh no! I know the number. It’s your roll number!
What is that number!

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• 1,206.9K views

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