Calculate the number 1968
[7373] Calculate the number 1968 - NUMBERMANIA: Calculate the number 1968 using numbers [1, 1, 3, 3, 51, 454] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 2
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Calculate the number 1968

NUMBERMANIA: Calculate the number 1968 using numbers [1, 1, 3, 3, 51, 454] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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Worms

Little Johnny watched the science teacher start the experiment with the worms. Four worms were placed into four separate jars.
The first worm was put into a jar of alcohol
The second worm was put into a jar of cigarette smoke.
The third worm was put into a jar of sperm.
The fourth worm was put into a jar of soil.
After one day, these were the results:
The first worm in alcohol - dead.
Second worm in cigarette smoke - dead.
Third worm in sperm - dead.
Fourth worm in soil - alive.
So the Science teacher asked the class - "What can you learn from this experiment."
Little Johnny quickly raised his hand and said - "As long as you drink, smoke and have sex, you won't have worms."      

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Black-American patent

In 1834, Henry Blair of Glenross, Maryland, received a U.S. patent on a corn planter (No. X8447). Two years later, on 31 Aug 1836, he was also issued a patent on a cotton seed planter (No. 15). Blair was born in Maryland about 1807 and lived until 1860. He was a successful farmer whose inventions met a need to increase efficiency in farming. His patents were signed with a simple "X" because he had not learned to read or write. Henry Blair was the second African-American to hold a patent. For some time he had been regarded as the first, until it became better known that the first African-American on record to be granted a patent was Thomas Jennings for a "dry-scouring" cleaning process (3 Mar 1821, No. X3306).«[Image top: side view of machine; bottom: detail of section of seed hopper showing cylinder with holes in the periphery that turns with the wheels to drop grains of corn.]
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