BRAIN TEASERS
Brain Teasers (page 29)

Brain Teasers (page 29)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 281 to 290.
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Find number abc

If cab78 - ba3b6 = b99cb find number abc. Multiple solutions may exist.
Correct answers: 1
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#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: 1
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#brainteasers #mastermind
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Calculate the number 7299

NUMBERMANIA: Calculate the number 7299 using numbers [8, 3, 6, 6, 35, 645] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania

The godfather

A Mafia Godfather finds out that his bookkeeper has cheated him out of $10 million bucks. His bookkeeper is deaf. That was the reason he got the job in the first place. It was assumed that a deaf bookkeeper would not hear anything that he might have to testify about in court.

When the Godfather goes to confront the bookkeeper about his missing $10 million, he brings along his attorney, who knows sign language. The Godfather tells the lawyer 'Ask him where the $10 million bucks he embezzled from me is'. The attorney, using sign language, asks the bookkeeper where the money is?

The bookkeeper signs back: 'I don't know what you are talking about'. The attorney tells the Godfather: 'He says he doesn't know what you're talking about'. The Godfather pulls out a pistol, puts it to the bookkeeper's temple and says, 'Ask him again'! The attorney signs to the bookkeeper: 'He'll kill you if you don't tell him'! The bookkeeper signs back: 'OK! OK! You win! The money is in a brown briefcase, buried behind the shed in my cousin Enzo's backyard in Queens'!

The Godfather asks the attorney: 'Well, what'd he say'? The attorney replies: 'He says you don't have the balls to pull the trigger'.

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MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (7, 14, 17, 18, 27, 30, 31, 48, 51, 52) 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: 0
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#brainteasers #math #magicsquare
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Find number abc

If ca903 + cab90 = b65093 find number abc. Multiple solutions may exist.
Correct answers: 1
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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: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1030

NUMBERMANIA: Calculate the number 1030 using numbers [6, 9, 7, 7, 11, 169] 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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Find number abc

If a4cb7 + cb877 = 45a84 find number abc. Multiple solutions may exist.
Correct answers: 1
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: 2
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2032

NUMBERMANIA: Calculate the number 2032 using numbers [8, 4, 6, 4, 36, 410] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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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Edison patent

In 1893, a patent for a "Roller for Crushing Ore or Other Material" was issued to Thomas A. Edison (U.S. No. 498,385). Edison had in mind crushing iron ore. "It is usual in ore crushing machines employing rollers to mount them in pairs on suitable supporting frames and to provide means for driving each pair, and for feeding material to be crushed separately to each pair of rollers and to provide separate means for pressing the rollers of each pair together. In the machine to be described I employ three or more rollers supported side by side in a frame and moveable towards or away from each other, instead of using them in pairs, and a single weight and lever serves to press all of said rollers together."Image: drawing of the side elevation of the apparatus.
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