## Monthly Archive - December 2013brain 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.**42**

**Sanja Šabović**.

## Calculate the number 1540

NUMBERMANIA: Calculate the number 1540 using numbers [1, 8, 5, 1, 60, 165] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**36**

**Sanja Šabović**.

## Find the area of the shaded figure

Express result to the accuracy of 3 decimal.**17**

**Djordje Timotijevic**.

### Credit Cards

Abe and Esther are flying to Australia for a two week vacation to celebrate their 40th anniversary.

Suddenly, over the public address system, the Captain announces, "Ladies and Gentlemen, I am afraid I have some very bad news. Our engines have ceased functioning and we will attempt an emergency landing.

Luckily, I see an uncharted island below us and we should be able to land on the beach. However, the odds are that we may never be rescued and will have to live on the island for the rest of our lives!"

Thanks to the skill of the flight crew, the plane lands safely on the island. An hour later Abe turns to his wife and asks, "Esther, did we pay our $5,000 PBS pledge check yet?"

No, sweetheart," she responds.

Abe, still shaken from the crash landing, then asks, "Esther, did we pay our American Express card yet?"

"Oh, no! I'm sorry. I forgot to send the check," she says.

"One last thing, Esther. Did you remember to send checks for the Visa and MasterCard this month?" he asks.

"Oh, forgive me, Abie," begged Esther. "I didn't send that one, either."

Abe grabs her and gives her the biggest kiss in 40 years.

Esther pulls away and asks him, "What was that for?"

Abe answers, "They'll find us!"

## Which number should replace the question mark?

FUNNY MATH: Which number should replace the question mark?**22**

**Sanja Šabović**.

## CINEMANIA: Guess the movie title

Two Western bank/train robbers flee to Bolivia when the law gets too close. Film was made in 1969.**49**

**Djordje Timotijevic**.

## 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.**46**

**Sanja Šabović**.

## Calculate the number 1817

NUMBERMANIA: Calculate the number 1817 using numbers [9, 2, 1, 4, 49, 820] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.**21**

**Sanja Šabović**.

## Find the area of the shaded figure

Express result to the accuracy of 3 decimal.**33**

**Djordje Timotijevic**.

## CINEMANIA: Guess the movie title

When his secret bride is executed for assaulting an English soldier who tried to rape her, a commoner begins a revolt and leads Scottish warriors against the cruel English tyrant who rules Scotland with an iron fist. Film was made in 1995.**52**

**Djordje Timotijevic**.

## Calculate a * b

Calculate a * b**19**

**Sanja Šabović**.