## Monthly Archive - December 2019 (page 2)brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20. |

## 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:

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

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

## Calculate the number 8661

NUMBERMANIA: Calculate the number 8661 using numbers [2, 5, 8, 8, 22, 849] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

**Nílton Corrêa de Sousa**.#brainteasers #math #numbermania

## MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (3, 13, 15, 20, 21, 22, 23, 28, 31, 33, 39, 42) 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:

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

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

## Find number abc

If 69cba + 2babc = 965cc find number abc. Multiple solutions may exist.Correct answers:

**25**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:

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

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

## Calculate the number 6047

NUMBERMANIA: Calculate the number 6047 using numbers [2, 7, 2, 6, 34, 723] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

**undefined**.#brainteasers #math #numbermania

## Find number abc

If aaba6 - 1bcc2 = b0b5a find number abc. Multiple solutions may exist.Correct answers:

**18**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:

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

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

## Calculate the number 1033

NUMBERMANIA: Calculate the number 1033 using numbers [2, 8, 5, 9, 71, 992] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

**Fazil Hashim**.#brainteasers #math #numbermania

## MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (4, 6, 7, 8, 10, 11, 28, 69, 71, 72, 75) 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:

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

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