MTH-2215 Applied Discrete Math Quiz
4 Question and answers already
passed 2026
Let A = {@,#,*,&} and B = {0,1,2}. Suppose that f is the relation from A to B defined by f = {(@,0),(#,1),
(*,1),(&,1}. Is f a function from A to B?
No
Yes - correct answer ✔Yes
Let A = {1,2}, B = {g,r,a,y}, and f: A → B is the function defined by f = {(1,g),(2,g)}. Determine the domain,
codomain, and range of f.
The domain is A, the codomain is {g}, and the range is B.
The domain and codomain are both A, and the range is B.
The domain is A, codomain is B, and the range is {g}
The domain is B, the codomain is A, and the range is {g}. - correct answer ✔The domain is A, codomain
is B, and the range is {g}
Let A = Z and B = Z. Consider the function f : A → B defined by the rule that f(a) = 5a -1 for each element
a in A. Determine f(-1). - correct answer ✔-6
Consider the floor function f( a ) = ⌊ a ⌋. Then f(-0.1) = 0 .
False
True - correct answer ✔False
4 Question and answers already
passed 2026
Let A = {@,#,*,&} and B = {0,1,2}. Suppose that f is the relation from A to B defined by f = {(@,0),(#,1),
(*,1),(&,1}. Is f a function from A to B?
No
Yes - correct answer ✔Yes
Let A = {1,2}, B = {g,r,a,y}, and f: A → B is the function defined by f = {(1,g),(2,g)}. Determine the domain,
codomain, and range of f.
The domain is A, the codomain is {g}, and the range is B.
The domain and codomain are both A, and the range is B.
The domain is A, codomain is B, and the range is {g}
The domain is B, the codomain is A, and the range is {g}. - correct answer ✔The domain is A, codomain
is B, and the range is {g}
Let A = Z and B = Z. Consider the function f : A → B defined by the rule that f(a) = 5a -1 for each element
a in A. Determine f(-1). - correct answer ✔-6
Consider the floor function f( a ) = ⌊ a ⌋. Then f(-0.1) = 0 .
False
True - correct answer ✔False
