Final answer:
When using the primal simplex method and Dantzig's rule, floating point arithmetic is recommended for performing arithmetic.
Step-by-step explanation:
When using the primal simplex method and Dantzig's rule to choose entering columns, floating point arithmetic is recommended for performing arithmetic.
Floating point arithmetic is a method of representing and performing calculations with real numbers, which allows for a wide range of values and precision. It is commonly used in computer algorithms, including the simplex method.
Using decimals or fractions could introduce rounding errors and imprecise calculations, while using whole numbers may limit the range and accuracy of the calculations.