BRAIN TEASERS
The Most Difficult Tasks

The Most Difficult Tasks

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 7983

NUMBERMANIA: Calculate the number 7983 using numbers [9, 1, 8, 3, 36, 867] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania
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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: 0
CHECK ANSWER
#brainteasers #mastermind
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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

A blonde and a redhead have a...

A blonde and a redhead have a ranch. They have just lost their bull. The women need to buy another, but only have $500. The redhead tells the blonde, "I will go to the market and see if I can find one for under that amount. If I can, I will send you a telegram." She goes to the market and finds one for $499. Having only one dollar left, she goes to the telegraph office and finds out that it costs one dollar per word. She is stumped on how to tell the blonde to bring the truck and trailer. Finally, she tells the telegraph operator to send the word "comfortable." Skeptical, the operator asks, "How will she know to come with the trailer from just that word?" The redhead replies, "She's a blonde so she reads slow: 'Come for ta bull.'"
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Calculate the number 1941

NUMBERMANIA: Calculate the number 1941 using numbers [8, 3, 6, 6, 40, 577] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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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 (9, 10, 13, 14, 15, 18, 24, 25, 28, 62) 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 c6411 + 1cb2b = 4a4c1 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 959

NUMBERMANIA: Calculate the number 959 using numbers [1, 5, 8, 1, 98, 857] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If ac506 + 3c366 = 7ab7c find number abc. Multiple solutions may exist.
Correct answers: 1
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#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 4964

NUMBERMANIA: Calculate the number 4964 using numbers [6, 5, 9, 3, 27, 922] 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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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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Videotape recording

In 1952, the first U.S. video recording on magnetic tape giving credible results of off-air black and white recordings was made by John T. Mullin at the electronics division of Bing Crosby Enterprises, Inc., Los Angeles, Cal. Using a Video Tape Recorder, the images on magnetic tape were not only one-third less costly than photographic methods, but were also immediately available to reproduce on a standard TV monitor tube as soon as the tape was rewound. The 12-head VTR used one-inch tape running at 120 inches per second to record ten tracks of monochrome video information, a clock track to control synchronization and an FM audio track. The basic theory was to use frequency division multiplexing with the 10 channels covering the desired video range.
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