BRAIN TEASERS

# How many circles contain the white dot?

How many circles contain the white dot?
The first user who solved this task is Eugenio G. F. de Kereki.
#brainteasers #math #riddles

### Jeff beckoned to a salesman in...

Jeff beckoned to a salesman in the department store, pointed to white wool designer dress on a mannequin that Eunice was admiring, and asked, "Excuse me young lady, how much is this dress?"
"That dress is £899.95, Sir," sneered the rather snotty saleswoman.
"£899.95? For £99.95 I could get the same dress at the Bargain store downtown!"
"But sir," said the saleswoman, "You'll find that the dress downtown is recycled wool. This original is 100% pure virgin wool."
Jeff says, "So? For £800 I should care what the lambs do at night?"
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## Brain Teasers

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### Hovercraft

In 1959, the first experimental hovercraft, the SR.N1 made its first trip at Cowes on the Isle of Wight. It was designed by Sir Christopher Cockerell and built by Saunders-Roe. The invention was considered initially only for military use, but was released for civilian use in 1959. On 25 Jul 1959, the prototype crossed the English Channel. Cockerell first considered the possibility of travel by hovercraft, a vehicle that can move across land or water on a cushion of air, in the early 1950s. Using a can of cat food inside a coffee tin and reversed air-flow from a vacuum cleaner, he proved his theory on the mud floor of his boatyard. The hovercraft is now used in a variety of roles, from military transportation to ferrying cars and passengers across the Channel.
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