BRAIN TEASERS
Monthly Archive - February 2021 (page 3)

Monthly Archive - February 2021 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
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Calculate the number 5648

NUMBERMANIA: Calculate the number 5648 using numbers [9, 1, 3, 9, 68, 498] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Find number abc

If cc09b - b4a6b = 73c30 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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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: 21
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind

They were looking down into th...

They were looking down into the depths of the Grand Canyon. "Do you know," asked the guide, "that it took millions and millions of years for this great abyss to be carved out?"
"Well, I'll be darned," exclaimed the traveler. "I never knew this was a government job."
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Calculate the number 735

NUMBERMANIA: Calculate the number 735 using numbers [3, 7, 4, 8, 41, 621] 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.
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (11, 12, 17, 23, 24, 29, 50, 54, 55, 60) 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.
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#brainteasers #math #magicsquare
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Find number abc

If ccb5b - a2a88 = 2a4b8 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
[link]

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: 17
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
[link]

Calculate the number 2430

NUMBERMANIA: Calculate the number 2430 using numbers [7, 1, 3, 7, 23, 284] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #numbermania
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Elias James Corey

Born 12 Jul 1928.American organic chemist, winner of the Nobel Prize for Chemistry in 1990 "for his development of the theory and methodology of organic synthesis." He is principally known for his work is in computer-aided analyses of synthesis problems. Using "retrosynthetic analysis," a target molecule might be broken down by reversible steps into simpler, readily available compounds, which is greatly assisted by the use of computers. Corey has synthesized over 100 substances for the first time, including terpenes (plant oil hydrocarbons) and ginkolide B (an extract from the ginko tree used to control asthma.)
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