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What is the missing number i...

What is the missing number in the pattern above?

Correct answers: 290

The first user who solved this task is Rutu Raj.

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April Fool's Day - Toilet Surprise

Print out a life-size face (this can be anyone-someone in your family, a monster, a celebrity, your victim, or even yourself). Attach it to the underside of the toilet seat facing up. Now close the lid to the toilet. When your victim lifts the lid, they will get a scare!

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Georgy Nikolaevich Flerov

Died 19 Nov 1990 at age 77 (born 2 Mar 1913).Soviet physicist who, in 1941, recognized that uranium undergoes spontaneous fission (needing no neutron bombardment). He was one of the early Russian investigators of nuclear fission. In early 1942 , Flerov noticed that articles on nuclear fission were no longer appearing in western journals. Recognizing the implication that such research had become secret, he wrote to Premier Joseph Stalin, insisting that "we must build the uranium bomb without delay," (subsequently led by Igor V. Kurchatov.) In later research, Flerov announced synthesis of isotopes of element 104 (1965) and 106 (1974). Co-discoveries were made in the U.S. Several names were suggested. Eventually the adopted names were rutherfordium and seaborgium.«

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