BRAIN TEASERS

# Calculate the number 992

NUMBERMANIA: Calculate the number 992 using numbers [5, 8, 5, 9, 82, 608] 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

### Working in The Garden

A prisioner in jail received a letter from his wife:
"I have decided to plant some lettuce in the back garden. When is the best time to plant them?"
The prisioner, knowing that the prison guards read all the mail, replied in a letter:
"Dear Wife, whatever you do, DO NOT touch the back garden! That is where I hid all the gold."
A week or so later, he received another letter from his wife:
"You wouldn't believe what happened. Some men came with shovels to the house, and dug up the whole back garden."
The prisoner wrote another letter:
"Dear wife, NOW is the best time to plant the lettuce!"

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### First demonstration of remote computing

In 1940, the first demonstration of remote computing took place when a teletype terminal at the American Mathematical Association Meeting in Dartmouth, New Hampshire was used to communicate over phone lines with an attendant at the keyboard for input to George Stibitz's Complex Number Calculator in New York. The machine had been operational since 1 Aug 1940. In 1940, George Stibitz's Complex Number Calculator was functional. He was a research mathematician at Bell Laboratories, who worked on its construction from Apr 1939, assisted by Samuel Williams. Later known as Bell Labs Model I Relay Computer, it used telephone relays and coded decimal numbers as groups of four binary digits (bits) each. It has been called the first electromechanical computer for routine use.«[Image: An attendant sends messages to the Model I relay computer.]
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