BRAIN TEASERS

# Monthly Archive - February 2021

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.

## Find number abc

If c8850 + 9488b = bca7ab find number abc. Multiple solutions may exist.
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.
The first user who solved this task is Nasrin 24 T.
#brainteasers #mastermind

## Calculate the number 4436

NUMBERMANIA: Calculate the number 4436 using numbers [1, 9, 8, 2, 79, 502] 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

### What happened?

"What happened?" asked the hospital visitor to the heavily bandaged man sitting up in bed.
"Well, I went down to Alton towers and decided to take a ride on the Loch Ness Monster. As we came up to the top of the highest loop, I noticed a little sign by the side of the track. I tried to read it, but it was very small and I couldn't make it out. I was so curious that I decided to go round again, but we went by so quickly that I couldn't see what the sign said.
"By now, I was determined to read that sign, so I went round a third time. As we reached the top, I stood up in the car to get a better view."
"And did you manage to see what the sign said this time?" asked the visitor.
"Yes," he said sheepishly, "Remain seated at all times!"
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## MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (4, 5, 12, 14, 21, 22, 29, 68, 69, 76) 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

## Find number abc

If b9a8c - cb43a = 5ab5a 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 Nílton Corrêa de Sousa.
#brainteasers #mastermind

## Calculate the number 1566

NUMBERMANIA: Calculate the number 1566 using numbers [9, 6, 2, 1, 46, 229] 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 1bc5b + aa5bc = b7796 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 Nílton Corrêa de Sousa.
#brainteasers #mastermind

## Calculate the number 672

NUMBERMANIA: Calculate the number 672 using numbers [8, 5, 8, 3, 64, 199] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nasrin 24 T.