#### Answer

a. The natural numbers are 1 and 7
b. The whole numbers are 0, 1, and 7
c. The integers are -5, -1, 0, 1, and 7
d. The rational numbers are -5, -1, $\frac{1}{4}$, 0, 1, 7, 11.6
e. The irrational numbers are $\sqrt 7$ and 3$\pi$
f. The real numbers are -5, -1, $\frac{1}{4}$, 0, 1, 7, 11.6, $\sqrt 7$, and 3$\pi$

#### Work Step by Step

Real numbers are all numbers that correspond to points on a number line, so all numbers in the set are real.
Rational numbers can be represented as a quotient of integers, and irrational numbers are nonrational numbers.
Integers are positive and negative numbers on a number line, whole numbers include {0, 1, 2, ...}, and natural numbers include {1, 2, 3, ...}.