Which of the following is a set of even numbers less than 10?

If A = {a, b, c} and B = {c, d, e}, then A ∪ B is:

The domain of the function f(x) = x + 5 is:

If f(x) = 2x and g(x) = x + 3, then (f ∘ g)(1) is:

A relation R on a set A is reflexive if:

If A = {1, 2, 3}, B = {2, 3, 4}, and C = {3, 4, 5}, then (A ∩ B) ∪ (B ∩ C) is:

If U = {1, 2, 3, 4, 5} and A = {1, 3, 5}, then A' (the complement of A) is:

The range of the function f(x) = x² is:

If f(x) = 3x - 2 and g(x) = x + 1, then (g ∘ f)(2) is:

A function is onto if:

In a survey of 100 people, 60 like coffee, 40 like tea, and 20 like both. How many people like neither coffee nor tea?

If A = {x | x is an even number} and B = {x | x is a multiple of 3}, then A ∩ B is:

The inverse of the function f(x) = 2x + 1 is:

Which of the following functions is both one-to-one and onto?

A relation R on a set A is an equivalence relation if it is:

If A = {1, 2, 3}, the power set of A, denoted by P(A), is:

Let R be a relation on the set of integers defined by (a, b) ∈ R if a - b is divisible by 3. Which property does R NOT have?

If f(x) = (x + 1)/(x - 1), then f(f(x)) is:

Let f: R → R be defined by f(x) = x³ - x. Is f onto?

Let R be a relation on the set of integers defined by (a, b) ∈ R if a - b is divisible by 3. Which property does R NOT have?