MATH PUZZLE: Can you replace...
[5120] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 99 - The first user who solved this task is Djordje Timotijevic
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 99
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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A Texan was taking a taxi tour...

A Texan was taking a taxi tour of London and was in a hurry. As they went by the Tower of London the cab driver explained what it was and that construction of it started in 1346 and was completed in 1412.
The Texan replied, "Shoot, a little ol' tower like that? In Houston we'd have that thing up in two weeks!"
Next they passed the House of Parliament - started in 1544 and completed in 1618.
"Well boy, we put up a bigger one than that in Dallas and it only took a year!"
As they passed Westminster Abbey the cab driver was silent.
"Whoah! What's that over there?" asked the Texan.
The driver replied, "I don't know, it wasn't there yesterday."
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First U.S. antifouling paint patent

In 1863, the first U.S. patent for an antifouling paint for ships' hulls was issued to J.G. Tarr and A.H. Wonson (No. 40515) for a copper oxide, tar and naptha mixture. They claimed that a ship's hull thus painted could have protection against growth of barnacle shells and seaweeds lasting "for a period of twelve months, while another vessel painted in the common manner and employed in the same trade became so foul in six weeks as to require scraping." They took out an anti-corrosion antifouling paint patent on 13 Jun 1865 (U.S. No.48221). Fouling of a ship's bottom was a serious problem because it increases drag and greatly reduces a ship's speed. A British antifouling paint patent was issued on 31 Aug 1625 to William Beale.«
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