BRAIN TEASERS
The Easiest Tasks

The Easiest Tasks

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
Register with your Google Account and start collecting points.
Check your ranking on list.
[link]

Calculate 5+8

If 1+4=5, 2+5=12 and 3+6=21 then 5+8=?
Correct answers: 10827
The first user who solved this task is Thinh Ddh.
CHECK ANSWER
#brainteasers #math #riddles
[link]

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 4100
The first user who solved this task is Donya Sayah30.
CHECK ANSWER
#brainteasers #math #riddles
[link]

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 2976
The first user who solved this task is Дејан Шкребић.
CHECK ANSWER
#brainteasers #math #riddles

You Matter

You matter...
Until you multiply yourself by the square of the speed of light.
Then you energy.

Jokes of the day - Daily updated jokes. New jokes every day.
[link]

There are 6 words hidden in ...

There are 6 words hidden in the picture, can you find 1 of 6?
Correct answers: 2722
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles #riddles
[link]

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 2220
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #riddles
[link]

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 1329
The first user who solved this task is Fazil Hashim.
CHECK ANSWER
#brainteasers #math #riddles
[link]

How much is 4x5?

How much is 4x5?
Correct answers: 1206
The first user who solved this task is Ordinacija Aleksic.
CHECK ANSWER
#brainteasers #math #riddles
[link]

A is father of C and D is so...

A is father of C and D is son of B. E is brother of A. If C is sister of D, how is B related to E?
Correct answers: 1197
The first user who solved this task is Rutu Raj.
CHECK ANSWER
#brainteasers #riddles
[link]

Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 984
The first user who solved this task is Eugenio G. F. de Kereki.
CHECK ANSWER
#brainteasers #math #riddles
[link]

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 966
The first user who solved this task is Snezana Milanovic.
CHECK ANSWER
#brainteasers #math #riddles
NEXT PAGE
Follow Brain Teasers on social networks
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Last Correct Answer

Top 10 Users (1174)

1. H Tav
5861
2. c. raj.
5777
3. Nasrin 24 T
5731
4. Fazil Hashim
5718
5. Thinh Ddh
5557
6. Alfa Omega
4681
7. Djordje Timotijevic
4549
8. Mita Kojd
4525
9. Jakubovski Vladimir
4443
10. Chandu Rajyaguru
4419
See full ranking list

Max Rubner

Died 27 Apr 1932 at age 77 (born 2 Jun 1854).Physiologist who showed the available energy content of food was the same whether the material was consumed organically or merely burned (1894). He determined that no single type of food produced energy, but that the body variously made ready use of carbohydrates, fats and proteins. In 1883, he used geometry to compare metabolic rates of animals of different sizes. Thus, if an animal is N times taller than another, it has surface area N2 greater and mass N3 greater. Thus total metabolic rate (dependent on heat loss over surface area, N2), would be proportional to M2/3. Specific metabolic rate (the energy burnt M2/3, per unit of mass, M) would be proportional to M1/3. It took 50 years before this simple explanation was improved.
This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.