## Monthly Archive - December 2020brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |

## MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (13, 15, 17, 27, 29, 31, 56, 65, 67, 69, 91, 97) 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:

**11**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #magicsquare

## Find number abc

If 3c037 + 70b0a = 10cba1 find number abc. Multiple solutions may exist.Correct answers:

**38**The first user who solved this task is

**NĂlton CorrĂȘa de Sousa**.#brainteasers #math

## 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:

**29**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #mastermind

### Passing An Exam

Three patients in a mental institution prepare for an examination given by the head psychiatrist. If the patients pass the exam, they will be free to leave the hospital. However, if they fail, the institution will detain them for five years.

The doctor takes the three patients to the top of a diving board looking over an empty swimming pool, and asks the first patient to jump.

The first patient jumps head first into the pool and breaks both arms.

Then the second patient jumps and breaks both legs.

The third patient looks over the side and refuses to jump. "Congratulations! You're a free man. Just tell me why didn't you jump?" asked the doctor.

To which the third patient answered, "Well Doc, I can't swim!"

The doctor takes the three patients to the top of a diving board looking over an empty swimming pool, and asks the first patient to jump.

The first patient jumps head first into the pool and breaks both arms.

Then the second patient jumps and breaks both legs.

The third patient looks over the side and refuses to jump. "Congratulations! You're a free man. Just tell me why didn't you jump?" asked the doctor.

To which the third patient answered, "Well Doc, I can't swim!"

## Calculate the number 709

NUMBERMANIA: Calculate the number 709 using numbers [1, 9, 1, 4, 29, 684] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

**14**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #numbermania

## Find number abc

If 2c9bc + 47976 = 7388a find number abc. Multiple solutions may exist.Correct answers:

**28**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math

## 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:

**41**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #mastermind

## Calculate the number 1160

NUMBERMANIA: Calculate the number 1160 using numbers [1, 1, 2, 9, 67, 422] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

**10**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #numbermania

## MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (15, 17, 25, 27, 29, 37, 40, 42, 43, 50, 52, 91) 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:

**11**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math #magicsquare

## Find number abc

If 605ca + 523b3 = aa29ab find number abc. Multiple solutions may exist.Correct answers:

**17**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math

## 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:

**19**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #mastermind