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Quang Ngô

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last 3 solved tasks
If c2233 - 1433a = 3ba9c find number abc. Multiple solutions may exist.
During what month do people sleep the least?
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.

Louis Paschen

Born 22 Jan 1865; died 25 Feb 1947 at age 82.Louis Carl Heinrich Freidrich Paschen was a German physicist who was an outstanding experimental spectroscopist. In 1895, in a detailed study of the spectral series of helium, an element then newly discovered on earth, he showed the identical match with the spectral lines of helium as originally found in the solar spectrum by Janssen and Lockyer nearly 40 years earlier. He is remembered for the Paschen Series of spectral lines of hydrogen which he elucidated in 1908.«

Why the sun lightens our hair...

Why the sun lightens our hair, but darkens our skin?
Why women can't put on mascara with their mouth closed?
Why you don't ever see the headline "Psychic Wins Lottery"?
Why "abbreviated" is such a long word?
Why doctors call what they do "practice"?
Why you have to click on "Start" to stop Windows XP?
Why lemon juice is made with artificial flavor, while dishwashing liquid is made with real lemons?
Why the man who invests all your money is called a broker?
Why there isn't mouse-flavored cat food?
Who tastes dog food when it has a "new & improved" flavor?
Why they sterilize the needle for lethal injections?
Why they don't make the whole plane out of the material used for the indestructible black box ?
Why sheep don't shrink when it rains?
Why they are called apartments when they are all stuck together?
If con is the opposite of pro, is Congress the opposite of progress?
Why they call the airport "the terminal" if flying is so safe?
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