BRAIN TEASERS
Brain Teasers (page 272)

Brain Teasers (page 272)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 2711 to 2720.
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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: 28
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 1846

NUMBERMANIA: Calculate the number 1846 using numbers [3, 7, 5, 1, 36, 910] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 66
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 4cac9 - 4c0b5 = c54 find number abc. Multiple solutions may exist.
Correct answers: 39
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math

A week after their marriage, t...

A week after their marriage, the redneck newlyweds, Ed and Wanda, paid a visit to their doctor.
"You ain't gonna believe this, Doc," said Ed. "My thingy's turnin blue."
"That's pretty unusual," said the doctor. "Let me examine you." The doctor took a look. Sure enough, Ed's "thingy" really was blue. The doctor turned to Wanda and asked,"Are you using the diaphragm that I prescribed for you?"
"Yep, shore am," she replied brightly.
"And what kind of jelly are you using with it?"
"Grape," she replied.
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Calculate the number 3221

NUMBERMANIA: Calculate the number 3221 using numbers [8, 7, 4, 5, 71, 860] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nílton Corrêa de Sousa.
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, 9, 10, 17, 23, 24, 31, 43, 44, 47, 51) 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: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If cc48c - ca3bb = 8a23 find number abc. Multiple solutions may exist.
Correct answers: 28
The first user who solved this task is Nasrin 24 T.
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: 22
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5389

NUMBERMANIA: Calculate the number 5389 using numbers [7, 7, 1, 7, 27, 750] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 20b6c + a2a4c = 33aa4 find number abc. Multiple solutions may exist.
Correct answers: 29
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: 42
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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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.
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VTOL plane

In 1954, the first test of a VTOL airplane takes place when a Convair XFY-1 Pogo demonstrated a vertical takeoff and landing. It was known as a "Tail Sitter," but as prototype to test the concept, its glory flared, and faded in a matter of months. The XFY-1 was a prototype of a point-defense interceptor fighter intended for the Navy. The sole virtue was that it didn't need a runway, for the XFY-1 was built to sit upright on its tail, and take off straight up, using enormous contra-rotating propellers on its nose. After takeoff, a Tail Sitter changed from helicopter style vertical flight to airplane by simply pushing over from the vertical ascent to conventional horizontal flight. In landing, the process was reversed to land on its tail. It was too difficult to fly.
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