BRAIN TEASERS
Monthly Archive - July 2023 (page 2)

Monthly Archive - July 2023 (page 2)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20.
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Calculate the number 778

NUMBERMANIA: Calculate the number 778 using numbers [3, 4, 2, 4, 13, 146] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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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 (4, 6, 10, 15, 31, 32, 33, 34, 36, 37, 38, 65) 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: 1
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 4c649 - a09b2 = b77a7 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math

Three Policemen at the Pearly Gates

Three police officers were standing in line at the Pearly Gates.Saint Peter asked the first officer, “What did you do with your life?”“I was a police officer,” he responded.“What kind of police officer?” Saint Peter asked.“I was a vice officer. I kept drugs off the streets and out of the hands of kids.”“Welcome to heaven. You may end the gates.”He asked the second man what he did as a police officer.“I was a traffic officer,” said the man. “I kept the roads and highways safe.”“Welcome to heaven. You may enter the gates.”He asked the third man what he did as a police officer.“I was a military policeman, sir,” replied the man.“Wonderful! I’ve been waiting for you all day!” replied Saint Peter. “I need to take a break! Watch the gate, will you?”
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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 472

NUMBERMANIA: Calculate the number 472 using numbers [9, 2, 1, 8, 12, 526] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If 77b8c + 44bba = cbc5ac find number abc. Multiple solutions may exist.
Correct answers: 1
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: 5
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5925

NUMBERMANIA: Calculate the number 5925 using numbers [9, 7, 8, 6, 65, 782] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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 (4, 7, 9, 16, 19, 21, 24, 27, 29, 34, 84) 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: 1
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 76343 - 4bbb1 = 3a79c find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
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Sir George Darwin

Born 9 Jul 1845; died 7 Dec 1912 at age 67.Sir George (Howard) Darwin, the second son of the famous biologist Charles Darwin, was an English astronomer who championed a theory (no longer accepted) that the Moon was once part of the Earth, in what is now the Pacific Ocean. His was the first mathematical analysis of the evolution of Earth's Moon. He suggested that since the effect of the tides has been to slow the Earth's rotation and to cause the Moon to recede from the Earth, then by extrapolating back 4.5 billion years ago the Moon and the Earth would have been very close, with a day being less than five hours. Before this time the two bodies would actually have been one, until the Moon was torn away from the Earth by powerful solar tides that would have deformed the Earth every 2.5 hours.
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