BRAIN TEASERS
Monthly Archive - December 2022 (page 2)

Monthly Archive - December 2022 (page 2)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20.
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Find number abc

If 54ca7 + 997c1 = 1546bc find number abc. Multiple solutions may exist.
Correct answers: 12
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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: 2
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 691

NUMBERMANIA: Calculate the number 691 using numbers [6, 2, 6, 4, 42, 561] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania

One Last Confession

While a man was dying, his wife was maintaining a candlelight vigil by his side. She held his fragile hand, tears running down her face.Her praying woke him from his slumber. He looked up, and his pale lips began to move slightly."My darling," he whispered."Hush, my love," she said. "Rest, don't talk."He was insistent. "I have something that I must confess," he said in a tired voice."There isn't anything to confess," replied his weeping wife. "Everything's ok. Go to sleep."The man blurted out: "No, no, I must die in peace. I...I slept with your sister, your best friend, her best friend, and your mother!" "I know," whispered his wife, "that's why I poisoned you."
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Find number abc

If 744cb - abbca = 17c01 find number abc. Multiple solutions may exist.
Correct answers: 1
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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: 2
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 330

NUMBERMANIA: Calculate the number 330 using numbers [6, 7, 7, 8, 24, 213] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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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 (8, 12, 13, 16, 23, 27, 28, 29, 33, 34, 58) 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: 2
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If c5a0c + aaaab = bbc4a4 find number abc. Multiple solutions may exist.
Correct answers: 2
CHECK ANSWER
#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: 4
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1143

NUMBERMANIA: Calculate the number 1143 using numbers [4, 9, 8, 8, 51, 959] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
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Herbert C. Brown

Born 22 May 1912; died 19 Dec 2004 at age 92. English-born American chemist who developed organoboranes (compounds of boron, carbon and hydrogen) which provided many new techniques in synthetic organic chemistry. For this accomplishment, he shared (with Georg Wittig) the 1979 Nobel Prize for Chemistry. The versatility of organoboranes as reagents in reductions, additions and rearrangements provides new ways of linking carbon atoms to each other. Applications of organoboranes now include the manufacture of agricultural and pharmaceutical chemicals (such as the antidepressant Prozac). In graduate research during WW II, he discovered a method to produce sodium borohydride, giving a new approach to making hydrogen gas, used in weather balloons and later in fuel cells.«
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