BRAIN TEASERS

# Monthly Archive - October 2020

brain 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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind

## Calculate the number 1817

NUMBERMANIA: Calculate the number 1817 using numbers [4, 4, 5, 4, 68, 475] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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 (7, 9, 10, 13, 15, 16, 25, 27, 28, 30, 44) 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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare

### The Florist

A new business was opening and one of the owner's friends wanted to send him flowers for the occasion. They arrived at the new business site and the owner read the card, which said: 'Rest in Peace.'
The owner was angry and called the florist to complain. After he had told the florist of the obvious mistake and how angry he was, the florist replied:
'Sir, I'm really sorry for the mistake, but rather than getting angry, you should imagine this - somewhere, there is a funeral taking place today, and they have flowers with a note saying: 'Congratulations on your new location!''

Jokes of the day - Daily updated jokes. New jokes every day.

## Find number abc

If a5bc6 - 25b4b = 5005b find number abc. Multiple solutions may exist.
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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind

## Calculate the number 564

NUMBERMANIA: Calculate the number 564 using numbers [8, 3, 6, 2, 64, 932] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania

## Find number abc

If c71bc + 2b844 = b4aa7 find number abc. Multiple solutions may exist.
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.
The first user who solved this task is Fazil Hashim.
#brainteasers #mastermind

## Calculate the number 2708

NUMBERMANIA: Calculate the number 2708 using numbers [2, 1, 8, 2, 11, 904] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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 (9, 10, 14, 24, 25, 29, 34, 37, 65, 66, 70) 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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #magicsquare
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### Andreas Marggraf

Died 7 Aug 1782 at age 73 (born 3 Mar 1709).Andreas Sigismund Marggraf was a German chemist who was a member of the Royal Academy of Science and Literature of Berlin. In 1747, Marggraf demonstrated that various kinds of beet-root contained sugar and that the sugar could be extracted and crystallized. This discovery, however, was regarded for many years as being merely a laboratory determination and without practical value. However, it led to the development of the modern sugar industry, when Franz Karl Achard, a pupil of Marggraf, attacked the problem of beet-root cultivation and succeeded in extracting sugar from beets on a greater scale.
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