BRAIN TEASERS

# Calculate the number 1618

NUMBERMANIA: Calculate the number 1618 using numbers [7, 2, 9, 5, 14, 704] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania

### Parking

A policeman was patrolling a local parking spot overlooking a golf course. He drove by a car and saw a couple inside with the dome light on. There was a young man in the driver's seat reading a computer magazine and a young lady in the back seat knitting. He stopped to investigate.
He walked up to the driver's window and knocked. The young man looked up, cranked the window down, and said, "Yes, officer?"
"What are you doing?" the policeman asked.
"What does it look like?" answered the young man. "I'm reading a magazine."
Pointing towards the young lady in the back seat, the officer then asked, "And what is she doing?"
The young man looked over his shoulder and replied, "What does it look like? She's knitting."
"And how old are you?" the officer then asked the young man.
"I'm nineteen," he replied.
"And how old is she?" asked the officer.
The young man looked at his watch and said, "Well, in about twelve minutes she'll be eighteen."

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### Snow melting apparatus

In 1890, black American inventor Frank J. Farrell of New York City was issued a patent for an "Apparatus for melting snow" to be placed in a street gutter (No. 428,670). The box-shaped apparatus was designed so that the upper surface, a removeable cover, formed a portion of the bed of a street gutter. Inside, a duct for heated fluid had openings under a perforated tray, and drain holes. Steam could be supplied from an adjacent house. An automatic steam trap using a float-ball prevented the waste of live steam. The patent described that snow would be thrown upon the surface tray to be melted; the perforated tray caught sticks and stones. Earlier in the year, he patented a steam trap. He patented eight valves between 1890 and 1893.
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