One of the three types of questions included in the quantitative reasoning section of the GRE is quantitative comparison. These types of questions ask about the relative size or relationship between two quantities and to determine which is greater/larger, if the quantities are equal or if there is not enough information provided in the problem to make an accurate comparison.
In a quantitative comparison problem, two quantities will be placed in columns, marked Column A and Column B. Occasionally, additional information is provided for the problem, centered between the columns.
Problem-solving questions make up the second category of quantitative reasoning problems seen on the GRE. These problems vary in their format--ranging from word problems to computations or equations that require arithmetic, algebra or geometry. These questions may be individual or encompass several questions, which will be presented as a set. In all cases, answers are multiple choice.
The final type of quantitative reasoning question found on the GRE requires interpretation and analysis of data, which may be presented as tables, charts, graphs or other visual representations. Information you need to understand the data, such as whether the representation is drawn to scale, is provided on the test. Most questions are grouped in sets of two to five questions about a single data set.