What is the missing number?
[5769] What is the missing number? - What is the missing number? - #brainteasers #math #riddles - Correct Answers: 66 - The first user who solved this task is Nasrin 24 T
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What is the missing number?

What is the missing number?
Correct answers: 66
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Are Blind Pilots Flying?

One day at a busy airport, the passengers on a commercial airliner are seated waiting for the pilot to show up so they can get under way.
The pilot and copilot finally appear in the rear of the plane and begin walking up to the cockpit through the center aisle. Both appear to be blind; the pilot is using a white cane, bumping into passengers right and left as he stumbles down the aisle. The copilot is using a guide dog. Both have their eyes covered with sunglasses.
At first, the passengers do not react thinking that it must be some sort of practical joke. After a few minutes though, the engines start revving, and the airplane begins moving down the runway.
The passengers look at each other with some uneasiness. They start whispering among themselves and look desperately to the stewardesses for reassurance.
Yet, the plane starts accelerating rapidly, and people begin panicking. Some passengers are praying, and as the plane gets closer and closer to the end of the runway, the voices are becoming more and more hysterical.
When the plane has less than twenty feet of runway left, there is a sudden change in the pitch of the shouts as everyone screams at once. At the very last moment, the plane lifts off and is airborne.
Up in the cockpit, the copilot breathes a sigh of relief and tells the pilot: "You know, one of these days the passengers aren't going to scream, and we aren't going to know when to take off!"
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Thomas Hunt Morgan

Died 4 Dec 1945 at age 79 (born 25 Sep 1866). American geneticist and zoologist famous for his experimental research with the fruit fly by which he established the chromosome theory of heredity. He discovered that a number of genetic variations were inherited together and that this was because their controlling genes occurred on the same chromosome. At Columbia University (1904-28), he began his revolutionary genetic investigations of the fruit fly Drosophila melanogaster (1908). Initially skeptical of Gregor Mendel's research, Morgan performed rigorous experiments which demonstrated that genes were linked in a series on chromosomes and are responsible for identifiable, hereditary traits. In 1910 he discovered sex-linkage in Drosophila, and postulated a connection between eye color in fruit flies and human color blindness. His study of the characteristics inherited by mutants ultimately enabled him to determine the precise behaviour and exact localization of genes. Morgan and his "fly room" colleagues, mapped the relative positions of genes on Drosophila chromosomes. Morgan published his seminal book, The Mechanisms of Mendelian Heredity in 1915. Though this work was not widely accepted initially, Morgan was awarded a Nobel Prize for physiology or medicine in 1933.
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