Cube (algebra) however, easy to show that most numbers are not perfect cubes because "all" perfect cubes must have digital root 1, 8 or 9. That is their values modulo 9 may be only −1, 1 and 0. Moreover, the digital root of any number's cube can be determined by the remainder the number gives when divided by 3: Every positive integer can be written as the sum of nine (or fewer) positive cubes. This upper limit of nine cubes cannot be reduced because, for example, 23 cannot be written as the sum of fewer than nine positive cubes: The equation has
Ohio State Route 729 Ohio State Route 729 State Route 729 (SR 729) is a state highway in central Ohio. The route runs from SR 73 and SR 350 in the community of Snow Hill, northwest of New Vienna to SR 323 north of Jeffersonville. SR 729 begins at an intersection with SR 73 and SR 350 in the Green Township, Clinton County community of Snow Hill. Routes 73 and 350 formed a concurrency northwest of the southern terminus; the routes together head southeast to New Vienna. SR 729 heads northeast through Lees Creek/Centerville and across SR 72 before making a sharp turn towards