**Rule 2: A numerator is allowed to take on the value of zero in a
fraction. Any legal fraction (denominator not equal to zero) with a
numerator equal to zero has an overall value of zero.**

**Problem 4:** Write the numerator, denominator, and
division symbol for the simple fraction .

**Answer.** This is not a
fraction; its value is undefined because the denominator has a value
of zero. (see Rule 1).

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Author: Nancy Marcus

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