BRAIN TEASERS
Monthly Archive - February 2021 (page 3)

Monthly Archive - February 2021 (page 3)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
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Calculate the number 5648

NUMBERMANIA: Calculate the number 5648 using numbers [9, 1, 3, 9, 68, 498] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Find number abc

If cc09b - b4a6b = 73c30 find number abc. Multiple solutions may exist.
Correct answers: 19
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: 21
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind

The light turned yellow, just...

The light turned yellow, just in front of him. He did the right thing,stopping at the crosswalk, even though he could have beaten the red light by accelerating through the intersection.
The tailgating woman was furious and honked her horn, screaming in frustration, as she missed her chance to get through the intersection, dropping her cell phone and makeup.
As she was still in mid-rant, she heard a tap on her window and looked up into the face of a very serious police officer. The officer ordered her to exit her car with her hands up.
He took her to the police station where she was searched, fingerprinted, photographed, and placed in a holding cell.
After a couple of hours, a policeman approached the cell and opened the door. She was escorted back to the booking desk where the arresting officer was waiting with her personal effects.
He said, ''I'm very sorry for this mistake. You see, I pulled up behind your car while you were blowing your horn, flipping off the guy in front of you and cussing a blue streak at him. I noticed the 'What Would Jesus Do' bumper sticker, the 'Choose Life' license plate holder, the 'Follow Me to Sunday-School' bumper sticker, and the chrome-plated Christian fish emblem on the trunk, so naturally....I assumed you had stolen the car.''
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Calculate the number 735

NUMBERMANIA: Calculate the number 735 using numbers [3, 7, 4, 8, 41, 621] 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.
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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 (11, 12, 17, 23, 24, 29, 50, 54, 55, 60) 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: 14
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare
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Find number abc

If ccb5b - a2a88 = 2a4b8 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
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: 17
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2430

NUMBERMANIA: Calculate the number 2430 using numbers [7, 1, 3, 7, 23, 284] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
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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