Replace the question mark with a number
MATH PUZZLE: Can you replace the question mark with a number?Correct answers: 683
The first user who solved this task is Snezana Milanovic.
#brainteasers #math #riddles
Adolf von BaeyerDied 20 Aug 1917 at age 81 (born 31 Oct 1835). Johann Friedrich Wilhelm Adolf von Baeyer was a German chemist who synthesized indigo (1880) and formulated its structure (1883). He was awarded the Nobel Prize for Chemistry in 1905 "in recognition of his services in the advancement of organic chemistry and the chemical industry, through his work on organic dyes and hydroaromatic compounds". Baeyer also did work on acetylene and polyacetylene, and from this derived the famous Baeyer strain theory of the carbon rings. He studied benzene and cyclic terpene. In this connexion the Baeyer-Villiger oxidation of ketones by means of per-acids was discovered. His work on organic peroxides and oxonium compounds and on the connexion between constitution and colour aroused special interest. |