A firefighter stood on the m...
[4801] A firefighter stood on the m... - A firefighter stood on the middle rung of a ladder, spraying water on a burning house. He then climbed up 6 rungs before the heat of the flames caused him to come down 10 rungs. After some minutes he was able to climb 18 rungs to the very top of the ladder. How many rungs did the ladder have? - #brainteasers #math #riddles - Correct Answers: 51 - The first user who solved this task is Djordje Timotijevic
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A firefighter stood on the m...

A firefighter stood on the middle rung of a ladder, spraying water on a burning house. He then climbed up 6 rungs before the heat of the flames caused him to come down 10 rungs. After some minutes he was able to climb 18 rungs to the very top of the ladder. How many rungs did the ladder have?
Correct answers: 51
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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The barber's client looked de...

The barber's client looked depressed, so the barber told him, "Cheer up. I knew a guy who owed $5,000 he couldn't pay. He drove his vehicle to the edge of a cliff, where he sat for over an hour. A group of concerned citizens heard about his problem and passed a hat around. Relieved, the man pulled back from the cliff's edge."
"Incredible," said the client. "Who were these kind people?"
"The passengers on the bus."
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Edward Lawrie Tatum

Died 5 Nov 1975 at age 65 (born 14 Dec 1909).American biochemist whose research helped create the field of molecular genetics. He helped demonstrate that genes determine the structure of particular enzymes or otherwise act by regulating specific chemical processes in living things. With George Beadle and Joshua Lederberg, he won the 1958 Nobel Prize for Physiology or Medicine. During WW II, his work was of use in maximizing penicillin production, and it has also made possible the introduction of new methods for assaying vitamins and amino acids in foods and tissues. In 1940, in collaboration with George Beadle, he had made his studies on the pink bread mold, Neurospora crassa. They irradiated spores of bread moulds, allowed them to germinate, and discovered three mutant strains that had lost the ability to synthesize specific vitamins, implying that in each case the necessary enzyme was missing or nonfunctional. The mutants differed from normal by only a single gene, which showed that specific genes determine the structure of particular enzymes or otherwise act by regulating specific chemical processes in living things. In 1945, he moved to Yale and he extended his techniques to yeast and bacteria. Tatum and Lederberg discovered genetic recombination in certain bacteria (1946).
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