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Rasoul Jafari

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last 3 solved tasks
MATH PUZZLE: Can you replace the question mark with a number?
MATH PUZZLE: Can you replace the question mark with a number?
IF 8638+7542=105 and 5589+2468=225 THEN 1357+1919=?

Solar neutrino count

In 2001, the result of experiments counting previously undetected, but theoretically predicted, solar neutrinos was announced by a collaboration of Canadian, American and British scientists led by Arthur McDonald. They detected all three types of solar neutrinos (electron, muon and tau), using the SNO (Solar Neutrino Observatory) consisting of 9,456 photomultiplier tubes lining a stainless steel tank containing 1,000 tons of heavy water (D2O) 6800-ft deep in a nickel mine at Sudbury, Ontario, Canada. The combined results agreed with the total flux calculated using the standard computer model of the Sun, thus finally confirming the long-standing theory accounting for the various nuclear reactions taking place within the Sun.«[Image: external view of the SNO's photomultiplier array during detector construction.]

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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