Diophantus was a Greek mathe...
Diophantus was a Greek mathematician who lived in the third century. He was one of the first mathematicians to use algebraic symbols. Most of what is known about Diophantus's life comes from an algebraic riddle from around the early sixth century. The riddle states: Diophantus's youth lasted one sixth of his life. He grew a beard after one twelfth more. After one seventh more of his life, he married. 5 years later, he and his wife had a son. The son lived exactly one half as long as his father, and Diophantus died four years after his son. How many years did Diophantus live?Correct answers: 38
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
Old Josh was sat in his garden...
Old Josh was sat in his garden, sunbathing in the deck chair when he noticed his grand-son kneeling on the lawn with a worm. When he asked his grandson what he was doing, he found that he was trying to push the worm down the hole from which it came.
"If you can get that worm back in that hole I'll give you ten dollars," said Josh.
His grandson sat and thought for a moment, then rushed into the house. A few minutes later he returned with his mother's hair spray. He picked up the worm by one end and, as he let it hang down, he sprayed it all over with the hair spray. The spray set and the worm became stiff and hard. It was now easy to push the worm back in the hole. Josh was amazed. He gave the boy ten dollars, picked up the hair spray and went indoors.
About an hour later Josh came back into the garden and gave his grand-son another ten dollars.
"But grandpa," said the boy, "you've already given me the ten dollars you promised."
"That's from your grandma," said Josh.
"If you can get that worm back in that hole I'll give you ten dollars," said Josh.
His grandson sat and thought for a moment, then rushed into the house. A few minutes later he returned with his mother's hair spray. He picked up the worm by one end and, as he let it hang down, he sprayed it all over with the hair spray. The spray set and the worm became stiff and hard. It was now easy to push the worm back in the hole. Josh was amazed. He gave the boy ten dollars, picked up the hair spray and went indoors.
About an hour later Josh came back into the garden and gave his grand-son another ten dollars.
"But grandpa," said the boy, "you've already given me the ten dollars you promised."
"That's from your grandma," said Josh.