BRAIN TEASERS
Math (page 59)

Math (page 59)

These are fun math riddles. All of these tricky riddles are based on real math concepts and can be solved with purely math and logic. These are the tasks listed 581 to 590.
Register with your Google Account and start collecting points.
Check your ranking on list.
[link]

Find number abc

If 1773c + a16bb = 5ca27 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 1048

NUMBERMANIA: Calculate the number 1048 using numbers [7, 2, 8, 5, 64, 101] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
[link]

Find number abc

If b383b + 35a1a = 10c04c find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math

When my grandpas memory started to go

I remember when my grandpa's memory started to go.

It was the day I caught him urinating with the door open.

Which is not that bad, but it's annoying when your trying to drive.

@TVJonDore. http://on.cc.com/1EvMWpC

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

Calculate the number 469

NUMBERMANIA: Calculate the number 469 using numbers [2, 8, 9, 3, 63, 347] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
[link]

MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (9, 12, 17, 19, 20, 23, 27, 39, 42, 49, 51, 93) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B+C.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #magicsquare
[link]

Find number abc

If 945a9 + c3c88 = cbaa6a find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 388

NUMBERMANIA: Calculate the number 388 using numbers [6, 6, 4, 3, 70, 118] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
[link]

Find number abc

If 7b13a - bb6a5 = a9ac9 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 891

NUMBERMANIA: Calculate the number 891 using numbers [2, 4, 5, 4, 29, 130] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
CHECK ANSWER
#brainteasers #math #numbermania
[link]

MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (20, 21, 24, 27, 28, 29, 35, 50, 53, 54, 60) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B-C.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #magicsquare
PREVIOUS PAGE
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

Edison incandescent lamp filament patent

In 1899, Thomas A. Edison was issued a patent for his “Filament for Incandescent Lamps, and Process of Manufacturing Same” (U.S. No. 626,460). “I form a filament of highly-refractory non-conducting material which is preferably porous, and incorporate therein isolated particles of carbon, so as to produce spark gaps between the particles, whereby high-tension currents, either alternating, continuous, or intermittent, will be conducted from particle to particle of the carbon to raise the filament to incandescence. ... I prefer to use ... an oxid or oxids of the rare earths—such as the oxid of zirconium, thorium and others. ... I prefer to admix ... a carbonizable organic compound—such as a solution of sugar, asphalt or tartrate of the oxid itself” which will be carbonized.«
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.