BRAIN TEASERS
The Most Difficult Tasks

The Most Difficult 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]

Find number abc

If 972cb - 17aca = 79c94 find number abc. Multiple solutions may exist.
Correct answers: 0
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: 0
CHECK ANSWER
#brainteasers #mastermind
[link]

Calculate the number 883

NUMBERMANIA: Calculate the number 883 using numbers [5, 2, 9, 7, 27, 823] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania

Riding Nun’s

Two nuns are riding their bikes down the back streets of Rome.

One says breathlessly, "I've never come this way before!"

To which the other replies, "It's the cobblestones."

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

MAGIC SQUARE: Calculate A-B*C

The aim is to place the some numbers from the list (12, 13, 16, 20, 21, 24, 29, 30, 32, 33, 59) 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]

Which is a winning combination of digits?

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 648

NUMBERMANIA: Calculate the number 648 using numbers [6, 1, 8, 4, 36, 267] 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 b7aaa + 3b30c = 489a8 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
[link]

Which is a winning combination of digits?

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 2589

NUMBERMANIA: Calculate the number 2589 using numbers [8, 8, 3, 9, 99, 965] 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 (17, 20, 22, 23, 26, 28, 34, 41, 44, 46, 82) 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
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

Fred Allison

Died 2 Aug 1974 at age 92 (born 4 Jul 1882).American physicist who promoted a magneto-optical technique to detect isotopes (ultimately shown to be non-existent by D. Morey under Merritt at Cornell). This method, he said, was able to distinguish 16 isotopes of lead. In 1931, he thought he had detected the new element 87 in lepidolite, a lithium ore, which he called virginium, now called francium. (This is regarded as erroneous because the element has no long-lived isotopes. The confirmed discovery came in Jan 1939 by Marguerite Perey who discovered it in decay products of actinium). He also thought he had found 2 micrograms of element 85 in monazite, which he named alabamine. (Also now believed erroneous. It was discovered later, and named astatine.)«
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.