You can multiply two numbers if you know how to double, halve, and add up numbers. This is really interesting: basically the Egyptians were using binary multiplication! Watch the video to see how it works.
READ why this method works: http://mindyourdecisions.com/blog/2014/08/27/the-egyptian-method-russian-peasant-multiplication-video-and-a-proof/#.U_5I5vldV8E
WATCH how ancient Egyptians divided numbers: https://www.youtube.com/watch?v=bKqQGISplMo
This method is documented in the Rind Mathematical Papyrus. The document is from ~1650 BC, which is more than 3,600 years ago.
Rind Mathematical Papyrus: http://en.wikipedia.org/wiki/Rhind_Mathematical_Papyrus
Here's a book with more info about non-western mathematical history, "The Mathematics of Egypt, Mesopotamia, China, India, and Islam: A Sourcebook" : http://amzn.to/1CuroWL
If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions
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My Books
"The Joy of Game Theory" shows how you can use math to out-think your competition. (rated 4/5 stars on 23 reviews) https://www.amazon.com/gp/product/1500497444
"The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 5/5 stars on 1 review) https://www.amazon.com/gp/product/1523231467/
"Math Puzzles Volume 1" features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.5/5 stars on 11 reviews. https://www.amazon.com/gp/product/1517421624/
"Math Puzzles Volume 2" is a sequel book with more great problems. https://www.amazon.com/gp/product/1517531624/
"Math Puzzles Volume 3" is the third in the series. https://www.amazon.com/gp/product/1517596351/
"40 Paradoxes in Logic, Probability, and Game Theory" contains thought-provoking and counter-intuitive results. (rated 4.9/5 stars on 7 reviews) https://www.amazon.com/gp/product/1517319307/
"The Best Mental Math Tricks" teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 3 reviews) https://www.amazon.com/gp/product/150779651X/
"Multiply Numbers By Drawing Lines" This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 1 review) https://www.amazon.com/gp/product/1500866148/

© 2018 Songs about being drunk

After the good princess had breathed her last and had been honorably buried, Tebaldo indulged in the thought of wedding again, but he bore well in mind the promise he had made to his wife, and was firmly resolved to keep her saying. However, the report that Tebaldo, Prince of Salerno, was seeking another mate soon got noised abroad, and came to the ears of many maidens who, in worth and in estate, were no whit his inferiors; but Tebaldo, whose first care was to fulfil the wishes of his wife who was dead, made it a condition that any damsel who might be offered to him in marriage should first try on her finger his wifes ring, to see whether it fitted, and not having found one who fulfilled this condition -- the ring being always found too big for this and too small for that -- he was forced to dismiss them all without further parley. Now it happened one day that the daughter of Tebaldo, whose name was Doralice, sat at table with her father; and she, having espied her mothers ring lying on the board, slipped it on her finger and cried out, "See my father, how well my mothers ring fits me!" And the prince, when he saw what she had done, assented. But not long after this the soul of Tebaldo was assailed by a strange and diabolical temptation to take to wife his daughter Doralice, and for many days he lived tossed about between yea and nay. At last, overcome by the strength of this devilish intent, and fired by the beauty of the maiden, he one day called her to him and said, "Doralice, my daughter, while your mother was yet alive, but fast nearing the end of her days, she besought me never to take to wife any woman whose finger would not fit the ring she herself always wore in her lifetime, and I swore by my head that I would observe this last request of hers. Wherefore, when I felt the time was come for me to wed anew, I made trial of many maidens, but not one could I find who could wear your mothers ring, except yourself. Therefore I have decided to take you for my wife, for thus I shall satisfy my own desire without violating the promise I made to your mother." Doralice, who was as pure as she was beautiful, when she listened to the evil designs of her wicked father, was deeply troubled in her heart; but, taking heed of his vile and abominable lust, and fearing the effects of his rage, she made no answer and went out of his presence with an untroubled face. As there was no one whom she could trust so well as her old nurse, she repaired to her at once as the surest bulwark of her safety, to take counsel as to what she should do. The nurse, when she had heard the story of the execrable lust of this wicked father, spake words of comfort to Doralice, for she knew well the constancy and steadfast nature of the girl, and that she would be ready to endure any torment rather than accede to her fathers desire, and promised to aid her in keeping her virginity unsullied by such terrible disgrace.