Which number should replace the question mark?
[745] Which number should replace the question mark? - Which number should replace the question mark? Author: Sumbul Azeem - #brainteasers #math #riddles - Correct Answers: 335 - The first user who solved this task is Eric Newton
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Which number should replace the question mark?

Which number should replace the question mark? Author: Sumbul Azeem
Correct answers: 335
The first user who solved this task is Eric Newton.
#brainteasers #math #riddles
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Emergency Landing

At 8 p.m. one night, a pilot who had run out of fuel made an emergency landing at a top-secret government base. He was quickly surrounded by security and taken inside to be interrogated. The interrogation was grueling because they wanted to make sure it was an unplanned landing and he was not a spy.
The interrogation lasted all night. At 6 a.m. they refueled his plane and let him go with his promise never to return. Four hours later he returned and landed again.
Security met him on the runway. They asked him why he had come back.
'I know I promised never to return but I brought my wife and now you have to tell her where I was all night...'

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Hay fever

In 1819, the first clinical description of an allergy was delivered by Dr John Bostock to the Royal Medical and Chirurgical Society meeting in London. Bostock's paper, published in the society's Transactions, was titled “A Case of the Periodical Affectation of the Eyes and Chest.” It was, in reality, a description of his personal sufferings (During hay season, lay-persons called it hay fever.) In 1828, he gave a longer, more detailed paper, describing 28 more case, titled “OnCatarrhus Æstivus or Summer Catarrh.”For many years doctors called it “Bostock's catarrh.” Pollens of grasses, weeds and trees (also mold spores) are the main causes of this type of allergy.The nose lining swells, with a runny discharge. Also spells of sneezing and itchiness of the throat and palate also occur. The eyes may be similarly affected.«[Ref: Medico-Chirurgical Transactions (1819), 10:1, 161-165, and (1828), 12, 437-447.]
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