Can you replace the question mark with a number?
[6420] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 60 - The first user who solved this task is Nasrin 24 T
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 60
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Polishing Apples

A young man asked an old rich man how he made his money.
The old guy fingered his expensive wool vest and said, "Well, son, it was 1932. The depth of the Great Depression. I was down to my last nickel."
"I invested that nickel in an apple. I spent the entire day polishing the apple and, at the end of the day, I sold the apple for ten cents."
"The next morning, I invested those ten cents in two apples. I spent the entire day polishing them and sold them at 5:00 pm for 20 cents. I continued this system for a month, by the end of which I'd accumulated a fortune of $9.80."
"Then my wife's father died and left us two million dollars."

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Sir William Watson Cheyne

Died 19 Apr 1932 at age 79 (born 14 Dec 1852).(1st Baronet) Scottish surgeon and bacteriologist who was a pioneer of antiseptic surgical methods in Britain. Educated at Aberdeen University, then as an assistant to Lord Lister, one of the foremost surgeons of his day, he helped to formulate antiseptic techniques which revolutionised 19th century surgery. In 1885, he defined the four operational principles to respect to avoid the infection: surgical washing of the hands of the surgeon, sterilization of the instruments, disinfection of the operational site and protection by fields, and reduction of the number of germs present in the environment. During the Boer War in South Africa, he was Consultant Surgeon to Lord Roberts and wrote extensively on the problems of surgery in warfare.
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