BRAIN TEASERS
Monthly Archive - December 2025 (page 3)

Monthly Archive - December 2025 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
Register with your Google Account and start collecting points.
Check your ranking on list.
[link]

MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (13, 16, 20, 22, 23, 25, 26, 29, 30, 62, 92) 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 ba6aa - a0c91 = 1a2b6 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
[link]

What a winning combination?

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.
Correct answers: 1
CHECK ANSWER
#brainteasers #mastermind

Cotton Candy

So this old man is walking down the street in Brooklyn.

He sees a young boy sitting on the street in front of a candy shop, shoving sweets in his mouth as fast as possible.

The man walks up to the boy and says "You know son, it’s really not healthy to eat all that candy."

The kid looks up at him and says, "You know my grandfather lived to be 97 years old."

The man replies "Oh and did he eat a lot of candy?" The kid looks at him and says "No, but he minded his own fucking business."

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

Calculate the number 1669

NUMBERMANIA: Calculate the number 1669 using numbers [3, 5, 9, 6, 39, 344] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
[link]

Find number abc

If 9c3bc - ccc0b = 19ab2 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
[link]

Find the right combination

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.
Correct answers: 0
CHECK ANSWER
#brainteasers #mastermind
[link]

Calculate the number 2178

NUMBERMANIA: Calculate the number 2178 using numbers [8, 3, 5, 5, 99, 970] 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 (5, 8, 10, 12, 18, 21, 23, 33, 36, 38, 83) 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 cb55c - a0c06 = bbbc8 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
[link]

Find the right combination

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.
Correct answers: 0
CHECK ANSWER
#brainteasers #mastermind
PREVIOUS PAGE
NEXT PAGE
Follow Brain Teasers on social networks

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

Edwin J. Houston

Born 9 Jul 1847; died 1 Mar 1914 at age 66.Edwin James Houston was an American electrical engineer who, together with Elihu Thomson (another Philadelphia high school teacher)experimented with electricity. Houston invented, patented in 1881 and manufactured arc street-lighting. He presented the first paper, Notes on Phenomena in Incandescent Lamps, to The American Institute of Electrical Engineers when it began in 1884 (AIEE - the predecessor society of the present IEEE, The Institute of Electrical and Electronics Engineers, Inc.). The merger of Thomson-Houston and Edison General Electric companies (1892) formed General Electric. In 1894 he joined with Arthur Kennelly (who resigned from Edison's laboratory) to form a consulting company.
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.