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VAHID KHALILI

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last 3 solved tasks
If 703ab + 7177c = 14b15a find number abc. Multiple solutions may exist.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Look at the series (9458, 261440, 170, ...), determine the pattern, and find the value of the next number!

William Ferrel

Died 18 Sep 1891 at age 74 (born 29 Jan 1817).American meteorologist who was an important contributor to the understanding of oceanic and atmospheric circulation. He was able to show the interrelation of the various forces upon the Earth's surface, such as gravity, rotation and friction. Ferrel was first to mathematically demonstrate the influence of the Earth's rotation on the presence of high and low pressure belts encircling the Earth, and on the deflection of air and water currents. The latter was a derivative of the effect theorized by Gustave de Coriolis in 1835, and became known as Ferrel's law. Ferrel also considered the effect that the gravitational pull of the Sun and Moon might have on the Earth's rotation and concluded (without proof, but correctly) that the Earth's axis wobbles a bit.

Ponderings Collection 04

Why is it called a "building" when it is already built?
Why do they call them "apartments" when they are all stuck together?
Why is there an expiration date on SOUR cream?
If you keep trying to prove Murphy's Law, will something keep going wrong?
Why does flammable and inflammable mean the same thing?
How can someone "draw a blank"?
Shouldn't there be a shorter word for "monosyllabic"?
Why is the word "abbreviate" so long?
Why did kamikaze pilots wear helmets?
What is another word for "thesaurus"?
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