What was the setting of the devils arithmetic?

What is the factorization of the trinomial below 2x2 15x 25? What is the sample variance of 25 24 24 20 21? What is the magnitude of the force on the plus plus 4Q charge? Why is it that when you square a number it is called squared? How to Measure wood flooring for a 20' x 20' room? How many sides do 2 heptagons and 2 pentagons have altogether? How much is 2.1 feet in centimeters? What is 14.08 rounded 2 decimal places? What are synonyms for about? Size of shadows every hour of the day? What is 3.125 as a mixed number in simplest form? 32000 feet is about how many miles? What is a tangent to a radius at its endpoints? Sea going Mammal 5 and 3? How do you relight a majorca 245 gas boiler? 19 inches equals how many feet? What is a 86 degree? Find area of a circle with radius? How many syllables are in the word conserve? What are 2 fractions that are equal to 4 over 5?