## Monthly Archive - August 2019brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |

## 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.**25**

**Nílton Corrêa de Sousa**.

## Calculate the number 877

NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**13**

**Nílton Corrêa de Sousa**.

## MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (4, 5, 7, 10, 11, 13, 23, 24, 26, 88) 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.**10**

**Nasrin 24 T**.

### Casino Money

A man spent a weekend gambling in Las Vegas casinos, and he won $100,000. He didn't want anyone to know about it, so whan he came back home, he immediately went out to the backyard of his house, dug a hole and planted the money in it.

The next morning he walked outside and found only an empty hole. He noticed footsteps leading from the hole to the house next door, which was owned by a deaf-mute. On the same street lived a professor who understood sign language and was a friend of the deaf man. Grabbing his pistol, the enraged man went to awaken the professor and dragged him to the deaf man's house. He screamed at the professor:

"You tell this guy that if he doesn't give me back my money I'll kill him!"

The professor conveyed the message to his friend, and his friend replied in sign language: "I hid it in my backyard, underneath the cherry tree."

The professor turned to the man with the gun and said: "He's not going to tell you. He said he'd rather die first."

## Find number abc

If aac67 - 2b20c = b26a9 find number abc. Multiple solutions may exist.**18**

**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.**18**

**Nílton Corrêa de Sousa**.

## Calculate the number 5613

NUMBERMANIA: Calculate the number 5613 using numbers [6, 9, 4, 2, 31, 597] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**7**

**Nílton Corrêa de Sousa**.

## Find number abc

If 75849 + 856ac = b6b479 find number abc. Multiple solutions may exist.**18**

**Nílton Corrêa de Sousa**.

## 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.**16**

**Nasrin 24 T**.

## Calculate the number 362

NUMBERMANIA: Calculate the number 362 using numbers [5, 5, 1, 7, 20, 279] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**8**

**Nílton Corrêa de Sousa**.

## MAGIC SQUARE: Calculate A-B*C

The aim is to place the some numbers from the list (11, 12, 17, 30, 31, 36, 44, 68, 69, 74) 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.**10**

**Nasrin 24 T**.