BRAIN TEASERS
Monthly Archive - May 2025 (page 3)

Monthly Archive - May 2025 (page 3)

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

If a5abc + 302ca = 12b213 find number abc. Multiple solutions may exist.
Correct answers: 1
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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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1090

NUMBERMANIA: Calculate the number 1090 using numbers [6, 6, 4, 8, 25, 155] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania

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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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (17, 20, 21, 24, 26, 27, 28, 33, 38, 41, 42, 93, 98) 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
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#brainteasers #math #magicsquare
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Find number abc

If a6b2b + 77797 = c3b22c 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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 241

NUMBERMANIA: Calculate the number 241 using numbers [4, 4, 8, 5, 42, 400] 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 b4a4a - 8ca37 = 8008 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 7899

NUMBERMANIA: Calculate the number 7899 using numbers [5, 4, 3, 1, 34, 954] 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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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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