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12 hours ago · Unit 731 (Japanese: 731部隊, Hepburn: Nana-san-ichi Butai), short for Manchu Detachment 731 and also known as the Kamo Detachment: 198 and the Ishii Unit, was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War (1937–1945 ...
- 1936–1945
- Biological weapons, Chemical weapons, Explosives
- Estimated 3,000 to 300,000, 400,000 or higher from biological warfare, Over 3,000 from inside experiments from each unit (not including branches, 1940–1945 only): 20 , At least 10,000 prisoners died, No documented survivors
12 hours ago · 6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square o number, 25. Six is the first unitary perfect number, since it is the sum of its positive proper unitary divisors, without including itself. Only five such numbers are known to exist; sixty (10 × 6) and ninety (15 × 6) are the next two.
- six
- 6th, (sixth)
- 2 × 3
- senary
