BRAIN TEASERS
Monthly Archive - November 2021 (page 3)

Monthly Archive - November 2021 (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 caa3c - 5ab5a = 4b187 find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
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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: 20
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 5225

NUMBERMANIA: Calculate the number 5225 using numbers [5, 3, 1, 6, 25, 656] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #numbermania

The Pickle

There was a guy on the beach with about 25 gorgeous chicks swarming all around him.
Seeing this, a second guy strolls on up to him and asks, "What's your secret?"
The guy whispers, "All you gotta do is stick a pickle in your pants."
In a fluorish, the second guy runs off and stuffs a pickle in his pants. But when he returns to the shore, he soon discovers that every single girl that looks his way, runs off screaming in bloody terror. Confused, he hurries over to the first guyand desperately asks, "Why are all the girls running away from me?"
The first guy looks up and replies, "The pickle's on the wrong side."   

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Find number abc

If 30843 - a0a4c = 20c9b find number abc. Multiple solutions may exist.
Correct answers: 18
The first user who solved this task is Nasrin 24 T.
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: 25
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1007

NUMBERMANIA: Calculate the number 1007 using numbers [1, 2, 2, 3, 69, 870] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nasrin 24 T.
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, 8, 11, 13, 17, 20, 33, 37, 40, 45) 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: 8
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If b5501 - cb408 = 1c0ab find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
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: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 9812

NUMBERMANIA: Calculate the number 9812 using numbers [8, 3, 5, 8, 46, 859] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #numbermania
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Pitot tube

In 1732, Henri Pitot read a paper to the Royal Academy of Sciences in Paris about an instrument he had invented to measure the flow velocity at different depths of water in the River Seine*. It had a scale and two open vertical glass tubes on a wood frame. The lower end of one pointed down, the other bent at 90º facing the flow. The belief of the time was that flow velocity at a given depth was proportional to the mass above it, meaning increasing velocity at greater depth. Recording the difference in liquid levels in the two tubes, he showed the opposite was true. Henri Darcy improved the design, with the support of Henri Bazin. Today, the Pitot tube has an important application in aerodynamics for the measurement of the airspeed of aircraft.«[Image: Book illustration showing a variation on Pitot tube by another practitioner presented by Fanning,1877.]
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