## Monthly Archive - January 2021brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |

## Find number abc

If 8013b - 35a1b = bbbc0 find number abc. Multiple solutions may exist.Correct answers:

**27**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:

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

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

## Calculate the number 5847

NUMBERMANIA: Calculate the number 5847 using numbers [7, 6, 3, 9, 39, 985] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

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

### International Guide Dog Day joke

April 26th is International Guide Dog Day! Celebrate it with a joke:

Blind man walks into a store

He grabs his guide dog by the tail and lifts it into the air then spins it around his head.

The store clerk, alarmed by this strange behavior said , "can I help you?"

…. "Nope, I'm just looking around."

#GuideDogDay #InternationalGuideDogDay

## MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (1, 2, 12, 21, 22, 32, 40, 41, 51, 87) 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:

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

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

## Find number abc

If 2b89c + b8ac5 = c30c2 find number abc. Multiple solutions may exist.Correct answers:

**35**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:

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

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

## Calculate the number 3939

NUMBERMANIA: Calculate the number 3939 using numbers [1, 4, 6, 6, 13, 989] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

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

## Find number abc

If 1bbcb + 471a4 = b373c find number abc. Multiple solutions may exist.Correct answers:

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

**Nílton Corrêa 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:

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

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

## Calculate the number 537

NUMBERMANIA: Calculate the number 537 using numbers [4, 7, 1, 6, 60, 472] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

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