Replace the question mark with a number
[3496] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 419 - The first user who solved this task is Fazil Hashim
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 419
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
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Cow and grass

Teacher: "I asked you to draw a cow and grass, but I only see a cow. Where is grass?"
Student: "The cow ate the grass, sir."
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Gilbert Newton Lewis

Died 23 Mar 1946 at age 70 (born 23 Oct 1875). American chemist who collaborated with Irving Langmuir in developing an atomic theory. He developed a theory of valency, which introduced the covalent bond (c. 1916), whereby a chemical combination is made between two atoms by the sharing of a pair of electrons, one contributed from each atom. This was part of his more general octet theory, published in Valence and the Structure of Atoms and Molecules (1923). Lewis visualized the electrons in an atom as being arranged in concentric cubes. The sharing of these electrons he illustrated in the Lewis dot diagrams familiar to chemistry students. He generalized the concept of acids and bases now known as Lewis acids and Lewis bases.«
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