Mathematical wrinkles for teachers and private learners, consisting of knotty problems;mathematical recreations; answers and solutions; rules of mensuration; short methods; helps, tables, etc., (1923)
Jones, Samuel I. (Samuel Isaac), 1880- · Nashville, Tenn., S. I. Jones · leaf 231
rding to the value assigned to the smallest part, or unit of measurement. If this unit of measurement be 1, the number will be 1 + 40 + 400 + 500 = 941. If the unit be 2, the number will be 2 4- 80 4- 800 + 1000 = 1882, and so on ad infinitum . 205. 2519. 206. Find the center of either side of a… … thus made with the uncut square in the center, as shown 111 the larger figure, and you will have a single perfect square. — From “Mechanical Puzzles.”
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