In 1742 the Mathematician Christian Goldbach Observed That Every Even

question 76

Multiple Choice

In 1742 the mathematician Christian Goldbach observed that every even number (except 2) seemed representable as the sum of two primes. Goldbach could not prove this result, known today as Goldbach's conjecture, so he wrote to his friend, the world-famous mathematician Leonhard Euler. Euler was unable to prove or disprove this conjecture, and it remains unsolved to this day. Write the numbers 16, 18, 20 as the sum of two primes. ​

• A) 16 = 3 + 13, 18 = 1 + 17, 20 = 5 + 15
• B) 16 = 13 + 3, 18 = 15 + 3, 20 = 16 + 4
• C) 16 = 14 + 2, 18 = 13 + 5, 20 = 15 + 5
• D) 16 = 13 + 3, 18 = 13 + 5, 20 = 13 + 7
• E) 16 = 11 + 5, 18 = 11 + 7, 20 = 1 + 19

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A metric indicating the density of the electrolyte solution in a battery, relative to water, used to assess battery health.

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Electrolyte Mixture

A solution containing ions that is used in batteries and various types of cells to conduct electricity.

Sulfuric Acid

Sulfuric Acid is a highly corrosive strong mineral acid with the molecular formula H2SO4, widely used in industry and laboratories.