BRAIN TEASERS

# Calculate 12+9

IF 8 + 2 = 16106 and 13 + 6 = 78197 THEN 12 + 9 = ?
The first user who solved this task is Allen Wager.
#brainteasers #math #riddles

A little old lady answered a knock on the door one day, only to be confronted by a well-dressed young man carrying a vacuum cleaner. 'Good morning,' said the young man. 'If I could take a couple of minutes of your time, I would like to demonstrate the very latest in high-powered vacuum cleaners.'
'Go away!' said the old lady. ''I'm broke and haven't got any money!'' and she proceeded to close the door. Quick as a flash, the young man wedged his foot in the door and pushed it wide open. ''Don't be too hasty!'' he said. ''Not until you have at least seen my demonstration.'' And with that, he emptied a bucket of horse manure onto her hallway carpet. ''Now, if this vacuum cleaner does not remove all traces of this horse manure from your carpet, Madam, I will personally eat the remainder.''
The old lady stepped back and said, ''Well let me get you a fork, 'cause they cut off my electricity this morning!
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## Brain Teasers

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### Royal Society charter

In 1662, the Royal Society, London, received its Royal Charter, which was passed by the Great Seal, from King Charles II. It was a successor to the Society for the Promoting of Physico-Mathematical Experimental Learning, constituted to promote experimental philosophy, formed at a meeting of a dozen scientists on 28 Nov 1660 in Gresham College, London. The Society subsequently petitioned the King to recognise it and to make a royal grant of incorporation. Gresham College is named after Sir Thomas Gresham (son of Sir Richard Gresham, Lord Mayor 1537/38) who conceived the idea of building an Exchange modelled on the Antwerp Bourse.«[Image: Frontispiece from Sprat 's History of the Royal Society (1667). President of the Royal Society, Lord Brouncker (left); bust of the King; Francis Bacon (right).]
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