Typical costs: 1  A standard portable restroom (non-flushing) rental typically costs $100 to $175 per weekend. 2  A handicap accessible restroom (non-flushing) rental typically costs $150 to $250 per weekend.  A fresh-water flushing toilet rental typically costs $150 to $375 per weekend.
Quick Answer. Q represents rational numbers because all rational numbers are a quotient. This means that each rational number can be expressed by a fraction with a denominator other than zero and a numerator that is a whole number. Whole numbers, fractions and decimals are all rational numbers.
The Empty Set and Set Equality. This lesson is part of a series of lessons on sets. In this lesson, we will learn how to define sets, the empty set, equal sets, subset, superset, proper subset, and proper superset. The Null set or Empty set. There are some sets that do not contain any element at all. For example, the set of months with 32 days. We call a set with no elements the null or empty set. It is represented by the symbol { } or Ã¸ . The set of dogs with six legs. The set of squares with 5 sides. The set of cars with 20 doors.