BRAIN TEASERS
Math (page 2)

Math (page 2)

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 11 to 20.
Register with your Google Account and start collecting points.
Check your ranking on list.
[link]

Find number abc

If 9cab9 + 5cc3a = 15bcc9 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 4405

NUMBERMANIA: Calculate the number 4405 using numbers [1, 4, 5, 3, 30, 864] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
[link]

MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (2, 5, 8, 21, 24, 27, 37, 40, 43, 98) 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

A patient was waiting nervousl...

A patient was waiting nervously in the examination room of a famous specialist.
"So who did you see before coming to me?" asked the doctor.
"My General Practitioner."
"Your GP?" scoffed the doctor. "What a waste of time. Tell me, what sort of useless advice did he give you?"
"He told me to come and see you."
Jokes of the day - Daily updated jokes. New jokes every day.
[link]

Find number abc

If 6cba7 - a8779 = bb6c8 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 1728

NUMBERMANIA: Calculate the number 1728 using numbers [2, 4, 9, 1, 33, 284] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
[link]

Find number abc

If 8b597 + b987c = 11b47a find number abc. Multiple solutions may exist.
Correct answers: 5
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 835

NUMBERMANIA: Calculate the number 835 using numbers [7, 1, 5, 7, 21, 800] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
[link]

MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (21, 22, 24, 25, 26, 27, 39, 42, 44, 48, 51) 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
[link]

Find number abc

If 73ac6 + bbc63 = 161a69 find number abc. Multiple solutions may exist.
Correct answers: 4
CHECK ANSWER
#brainteasers #math
[link]

Calculate the number 1380

NUMBERMANIA: Calculate the number 1380 using numbers [5, 4, 1, 2, 35, 196] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
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

William Gilbert

Died 10 Dec 1603 at age 59 (born 24 May 1544). English scientist, the “father of electrical studies” and a pioneer researcher into magnetism, who spent years investigating magnetic and electrical attractions. Gilbert coined the names of electric attraction, electric force, and magnetic pole. He became the most distinguished man of science in England during the reign of Queen Elizabeth I. Noting that a compass needle not only points north and south, but also dips downward, he thought the Earth acts like a bar magnet. Like Copernicus, he believed the Earth rotates on its axis, and that the fixed stars were not all at the same distance from the earth. Gilbert thought it was a form of magnetism that held planets in their orbits.[EB gives death date as 10 Dec (Old Style 30 Nov) 1603.]
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.