BRAIN TEASERS
Monthly Archive - October 2025 (page 2)

Monthly Archive - October 2025 (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 1609

NUMBERMANIA: Calculate the number 1609 using numbers [8, 4, 6, 1, 43, 789] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 62a66 + a46cb = 13a42c find number abc. Multiple solutions may exist.
Correct answers: 0
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: 0
CHECK ANSWER
#brainteasers #mastermind

A little girl was talking to h...

A little girl was talking to her teacher about whales. The teacher said it was physically impossible for a whale to swallow a human because even though a whale is a very large mammal, its throat is very small. The little girl stated that Jonah was swallowed by a whale. The teacher reiterated that a whale could not swallow a human, it was impossible. The little girl said, "When I get to heaven I will ask Jonah".
The teacher asked, "What if Jonah went to hell?"
The little girl replied, "Then you ask him!"
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Calculate the number 6332

NUMBERMANIA: Calculate the number 6332 using numbers [9, 8, 4, 8, 39, 762] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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 (24, 25, 27, 29, 30, 32, 57, 66, 67, 69, 75) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If bb31c + 2b14a = 8a4bc find number abc. Multiple solutions may exist.
Correct answers: 2
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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 768

NUMBERMANIA: Calculate the number 768 using numbers [2, 1, 9, 5, 42, 380] 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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Find number abc

If a11a0 - 3cb47 = b8643 find number abc. Multiple solutions may exist.
Correct answers: 1
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: 1
CHECK ANSWER
#brainteasers #mastermind
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1,000th pulsar

In 1998, the discovery of the 1,000th pulsar in our galaxy was announced in a press release by the Jodrell Bank Observatory, University of Manchester, using the 64-meter Parkes Radio Telescope in New South Wales, Australia. A “multibeam”receiver was installed on the telescope in early 1997. This allowed the astronomers from England, Australia, United States, and Italy to find pulsars much faster than before. On average, they found a new pulsar in every hour of observing. By this date, the researchers had found more than 200 pulsars and they expected to find another 600 more before the survey ended. The “multibeam”receiver used consists of 13 hexagonally arranged receivers that allow simultaneous observations.
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