Brain Teasers & Puzzles
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The Puzzlefry mechanical computer is a very sensitive device, it consists of interlocked toothed gear cogs.
The largest Cog has 242 teeth and the others have 160, 64 and 22 respectively.
By accident, John started to rotate the largest Cog.
How many revolutions must he rotate the largest Cog make before the computer is back in its starting position with all of the Cogs where they started?
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A kind gentleman decided to give 10 oranges to each of the girls in his town and 5 oranges to each of the boys.
Of the 612 children in his town, only half the girls and three quarters of the boys took the sweets.
How many oranges did the kind gentleman have to buy?
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What number is one half of one third of one quarter of 360?
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Jahn and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, John asked everyone, including his own wife, how many hands they shook. To his surprise, Jahn got nine different answers.
How many hands did John’s wife shake ?
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It is a single candle on a cake
A solar trip without a break
Cheer it out and hear it ringing
52 days and a new beginning
What is it ?
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What comes next in the sequence
24, 10, 8, 10, 18 , ?
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This is what you use to write
But it is not a pen
One of these has five fingers
And two of them have tenWhat is it ?
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A rather silly car thief stole, without knowing it, the car of the chief of police. The police immediately started an investigation and based on witness depositions, four suspects were arrested that were seen near the car at the time of the crime.
Because the chief of police took the case very seriously, he decided to examine the suspects personally and use the new lie detector of the police station. Each suspect gave three statements during the examinations, which are listed below:
Suspect A:
“In high school, I was in the same class as suspect C.”
“Suspect B has no driving license.”
“The thief didn’t know that it was the car of the chief of police.”
Suspect B:“Suspect C is the guilty one.”
“Suspect A is not guilty.”
“I never sat behind the wheel of a car.”
Suspect C:“I never met suspect A until today.”
“Suspect B is innocent.”
“Suspect D is the guilty one.”
Suspect D:“Suspect C is innocent.”
“I didn’t do it.”
“Suspect A is the guilty one.”
With so many contradicting statements, the chief of police lost track. To make things worse, it appeared that the lie detector did not quite work yet as it should, because the machine only reported that exactly four of the twelve statements were true, but not which ones.Who is the car thief ?
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You write on it and secrets you can keep. In places never seen. It spin like a top. Though stiff as a board, It is often described like a mop. What is it?
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Tony’s father is 45. He is 15 years older than twice Tony’s age. How old is Tony? John is twice as old as Jacob. Three years from now, the sum of their ages will be 42.
How old is John?
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