## Brain Teaserspuzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 1 to 10. |

## Find number abc

If 1aa66 + caacc = baa21 find number abc. Multiple solutions may exist.**4**

**Nasrin 24 T**.

## Find the 8 letters word

Find the 8 letters word. Word may go in all 8 directions.**6**

**Fazil Hashim**.

## 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.**8**

**Nasrin 24 T**.

### Three nurses sadly pass awa...

Three nurses sadly pass away. They rise up into heaven, and there they approach the gatekeeper to plead their case for entering paradise.

So the keeper points to the first nurse, who says: “I worked in an emergency room. I treated many people, and always did my best to help. And although sometimes we would lose patients, I still think I deserve to enter.”

The gatekeeper glances at her file and admits her to heaven.

The second nurse then says, “I used to work in the operating room, assisting surgeons. It was a lot of stress, and we lost many people, but I always did my best.”

The keeper glances at her file and motions her to enter.

“And you?” He asks the third nurse.

“I was a case manager for an HMO. I worked with thousands of patients.”

The gatekeeper takes a long and careful look at her file. He pulls out a calculator and starts entering digits quickly, looking back from time to time at the woman’s file. After a few minutes like this, the keeper looks up, smiles at her and says: “Congratulations! You’ve been admitted to heaven… for five days!”

## Calculate the number 519

NUMBERMANIA: Calculate the number 519 using numbers [7, 3, 6, 6, 81, 207] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**7**

**Nílton Corrêa De Sousa**.

## MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (10, 11, 12, 15, 16, 18, 22, 23, 24, 30, 35, 53) 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.**8**

**Nílton Corrêa De Sousa**.

## Find a famous person

Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 7,9.**23**

**Nílton Corrêa De Sousa**.

## Find number abc

If b61b4 - b10c6 = c13a find number abc. Multiple solutions may exist.**17**

**Nasrin 24 T**.

## 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.**22**

**Nasrin 24 T**.

## Calculate the number 2636

NUMBERMANIA: Calculate the number 2636 using numbers [3, 2, 7, 7, 15, 279] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**5**

**Nílton Corrêa De Sousa**.

## Find number abc

If ab1c4 + 6b9a1 = 9707c find number abc. Multiple solutions may exist.**24**

**Nasrin 24 T**.