For representing the multiplicative inverse of 5/7 on the number line, one unit should be divided in how many parts?
8
6
7
5
In order to represent a rational number on a number line, _____ of the rational number tells the number of parts that should be considered when the first unit is divided into equal parts.
The first unit of the number line has been divided into 15 equal parts. Which of the following rational numbers cannot be represented on such number line?