BRAIN TEASERS

# Monthly Archive - January 2022

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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## Calculate the number 787

NUMBERMANIA: Calculate the number 787 using numbers [1, 4, 8, 8, 23, 752] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
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#brainteasers #math #numbermania
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## Find number abc

If a84ab - 7b6c4 = 27856 find number abc. Multiple solutions may exist.
Correct answers: 12
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#brainteasers #math
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## 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: 11
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#brainteasers #mastermind

### Late Bus

Two old women were sitting on a bench waiting for their bus. The buses were running late, and a lot of time passed. Finally, one woman turned to the other and said, "You know, I've been sitting here so long, my butt fell asleep!'.
The other woman turned to her and said "I know! I heard it snoring!"

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## Calculate the number 2247

NUMBERMANIA: Calculate the number 2247 using numbers [3, 8, 6, 3, 44, 289] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
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#brainteasers #math #numbermania
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## MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (6, 8, 10, 11, 12, 15, 31, 33, 36, 59, 97) 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: 3
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#brainteasers #math #magicsquare
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## Find number abc

If ba3b6 + a977a = ca101 find number abc. Multiple solutions may exist.
Correct answers: 17
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#brainteasers #math
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## 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: 8
CHECK ANSWER
#brainteasers #mastermind
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## Calculate the number 329

NUMBERMANIA: Calculate the number 329 using numbers [3, 6, 9, 4, 53, 175] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
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#brainteasers #math #numbermania
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## Find number abc

If c8b0a - 1a0c1 = 8a613 find number abc. Multiple solutions may exist.
Correct answers: 8
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#brainteasers #math
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## 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: 14
CHECK ANSWER
#brainteasers #mastermind
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### Walter Noddack

Died 7 Dec 1960 at age 67 (born 17 Aug 1893).Walter Karl Friedrich Noddack was a German chemist who discovered the element rhenium (Jun 1925) in collaboration with his wife Ida Tacke. In 1922, he began a long search for undiscovered elements. After three years, the careful fractionation of certain ores yielded element 75, a rare heavy metallic element that resembles manganese. Named rhenium after the Rhine River, it was the last stable element to be discovered. Noddack is also remembered for arguing for a concept he called allgegenwartskonzentration or, literally, omnipresent concentration. This idea, reminiscent of Greek philosopher Anaxagoras, assumed that every mineral actually contained every element. The reason they could not all be detected was they existed in too small quantities.
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