BRAIN TEASERS
Monthly Archive - December 2018

Monthly Archive - December 2018

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 1662

NUMBERMANIA: Calculate the number 1662 using numbers [4, 3, 8, 2, 10, 532] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 12
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find number abc

If 9a8bb - cbb8b = a5ac0 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Djordje Timotijevic.
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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: 33
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind

An old man went to the college...

An old man went to the college that he went to when he was a youth. He knocked on room number 3 of the hostel and said:
"May I come in. I lived in this very room thirty years ago when I studied in this college".
A young man opened the door and let him in.
The old man examined the room, fondly remembering everything.
He said, "The same old room, the same old wooden table, the ventilator and the same old window that opens to the garden. And the same old bed."
When examining it he found a young girl under the bed.
The young man got alarmed and said, "Don't mistake me. She is my sister. She dropped her ear ring and is searching for it."
The old man said, "And the same old story..."
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Calculate the number 3997

NUMBERMANIA: Calculate the number 3997 using numbers [6, 8, 2, 1, 97, 642] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Djordje Timotijevic.
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 (6, 7, 9, 17, 18, 20, 23, 24, 26, 30, 73) 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: 15
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If ca0aa - b8b70 = 486a find number abc. Multiple solutions may exist.
Correct answers: 27
The first user who solved this task is Djordje Timotijevic.
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: 33
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 984

NUMBERMANIA: Calculate the number 984 using numbers [4, 2, 8, 8, 95, 120] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If b06aa - 15aa5 = c53bc find number abc. Multiple solutions may exist.
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
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: 28
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind
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First privately-built satellite

In 1961, the first satellite built by private citizens was put in to orbit. A Thor-Agena rocket, launched to deploy a militaryDiscoverer-36 satellite, also carried the 10-lb OSCAR I . The Orbiting Satellite Carrying Amateur Radio was deployed in low orbit, just above Earth's atmosphere, and it began transmitting "HI" in Morse code,10 times a minute. It was the 60th anniversary of Marconi's first transatlantic radio transmission, and little more than four years since Russia launched Sputnik on 4 Oct 1957. OSCAR 1 was designed and hand-built for $63 by California radio amateurs. The battery powered a 140-mW transmitter on 144.983 MHz, transmitting HI in Morse code for 22 days, for 312 orbits until 1 Jan 1962 when its non-rechargeable battery failed. It burned up in the atmosphere on 31 Jan 1962.«
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