Answer
(a) numerator; denominator
(b) See images.
(c) greater
Work Step by Step
(a) Proper fractions have a numerator that is smaller than the denominator, while improper fractions have a numerator that is greater than or equal to the denominator.
Thus the improper fractions of Exercise 71 are the ones where the numerator is greater than or equal to the denominator.
(b) See images.
(c) We see from part (a) that all the improper fractions of Exercise 71 must be equal to or greater than one.