BRAIN TEASERS

# Calculate the number 1399

NUMBERMANIA: Calculate the number 1399 using numbers [7, 3, 6, 7, 76, 499] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania

### A Texan farmer goes to Austral...

A Texan farmer goes to Australia for a vacation.
There he meets an Aussie farmer and gets talking.
The Aussie shows off his big wheat field and the Texan says, "Oh! We have wheat fields that are at least twice as large."
Then they walk around the ranch a little, and the Aussie shows off his herd of cattle. The Texan immediately says, "We have longhorns that are at least twice as large as your cows."
The conversation has, meanwhile, almost died when the Texan sees a herd of kangaroos hopping through the field. He asks, "And what are those?"
The Aussie replies with an incredulous look, "Don't you have any grasshoppers in Texas?"
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### Tay Railway Bridge

In 1871, the foundation stone was laid for the Tay Railway Bridge to be built across the mile-wide Firth of Tay on the east Scottish coast. The two-mile bridge of lattice girders on ironwork columns was opened 31 May 1878. At the time, it was the longest bridge in the world. It had a clearance of about 88-ft above the high water mark in the middle of the firth to allow ships to pass up the Tay to Perth. Sir Thomas Bouch was the railway engineer in charge of its construction. He was knighted in Jun 1878, the month after it opened. It collapsed the following year, in a fierce gale on 28 Dec 1879, killing a trainload of people.«
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