## Monthly Archive - September 2020brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |

## Find number abc

If 5c496 - a6aba = a7a94 find number abc. Multiple solutions may exist.Correct answers:

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

**Nasrin 24 T**.#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:

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

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

## Calculate the number 253

NUMBERMANIA: Calculate the number 253 using numbers [8, 2, 3, 6, 40, 156] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

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

## Find number abc

If c4ab5 + c75b1 = 171cab find number abc. Multiple solutions may exist.Correct answers:

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

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

## Calculate the number 5117

NUMBERMANIA: Calculate the number 5117 using numbers [8, 3, 2, 2, 35, 928] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

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

## MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (3, 4, 5, 6, 7, 9, 18, 33, 39, 40, 43, 83, 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.Correct answers:

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

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

## Find number abc

If a2ab0 - 3a705 = cc1a5 find number abc. Multiple solutions may exist.Correct answers:

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

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

## Calculate the number 306

NUMBERMANIA: Calculate the number 306 using numbers [1, 1, 9, 9, 63, 226] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers:

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

**NĂlton CorrĂȘa de Sousa**.#brainteasers #math #numbermania

## Find number abc

If 3bca6 - b3937 = 8c79 find number abc. Multiple solutions may exist.Correct answers:

**29**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:

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

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