BRAIN TEASERS
Monthly Archive - March 2022

Monthly Archive - March 2022

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (2, 3, 9, 25, 26, 32, 45, 46, 52, 80, 82) 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 73a6c + 75bbc = 1c91cb find number abc. Multiple solutions may exist.
Correct answers: 5
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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
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#brainteasers #mastermind

Alfie was listening to his sis...

Alfie was listening to his sister practice her singing. "Sis," he said, "I wish you'd sing Christmas carols."
"Thats nice of you, Alfie," she replied, "but why?"
Alfie replied, "Because then I'd only have to hear your voice once a year!"
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Calculate the number 7594

NUMBERMANIA: Calculate the number 7594 using numbers [8, 2, 6, 4, 40, 744] 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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Find number abc

If ac89a - 45ab8 = ca258 find number abc. Multiple solutions may exist.
Correct answers: 7
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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: 10
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 7273

NUMBERMANIA: Calculate the number 7273 using numbers [8, 7, 7, 7, 94, 954] 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 (13, 15, 17, 19, 25, 29, 31, 49, 53, 55) 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
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 5b34a + 4333b = 102ca7 find number abc. Multiple solutions may exist.
Correct answers: 11
CHECK ANSWER
#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: 8
CHECK ANSWER
#brainteasers #mastermind
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Edward A. Doisy

Born 13 Nov 1893; died 23 Oct 1986 at age 92.Edward Adelbert Doisy was an American biochemist who shared (with Henrik Dam) the 1943 Nobel Prize for Physiology or Medicine for his isolation and synthesis of vitamin K, a substance that encourages blood clotting (1939), used in medicine and surgery. With the embryologist Edgar Allen (1922-34), he developed assay techniques that facilitated research on sex hormones. Doisy and his associates isolated the sex hormones estrone (theelin, 1929; the first estrogen to be crystallized), estriol (theelol, 1930), and estradiol (dihydrotheelin, 1935). In 1936-39 he isolated two forms of the vitamin, (K1 from lucerne seed and K2 from fish meal, in a pure crystalline form), determined their chemical structures, and synthesized the vitamin.«
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