What is AR380-67?

Who first proposed the 4 colour theorem in 1852? What is 500 centimeters equal to? What is 0.9 in scientific notation? How many grams is 3 mg? How many people does the Bureau of Labor Statistics employ? 0.001 as a percentage? Is there a word synonymous with 'pursuit of perfection'? Where can you find examples of Math slogans? Do trapezoids have 3 right angles? What comes just before 10000000? What is 87 percent of 280? How many elements in the set a b c? What are the examples geometrical figures? How tall is 6 feet 4 inches? How man 89x52x33 skids can fit in 53 feet trailer? What is 49573 rounded to the neaest thousand? What is the next whole number after fifty thousand? How many real solutions does a quadratic equation have if its discriminant is zero? What is the same about how the numerator of the fraction and the digits to the right of the decimal point change? How many yards in 393 inches?