CS2321 Exam 2 Study Guide
Authored by Mary Galbraith
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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose A = {a,b,c,d} and B = {a,d,t,f}
What is the intersection of
R1 = {(a,a), (c,d), (a,d)} and R2 = {(a,t), (a,d), (t,f)}
{(a,b), (a,t),(c,t)}
{(a,d)}
Empty Set
{a,d}
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose A = {a,b,c,d} and B = {a,d,t,f}
What is the union of
R1 = {(a,a), (c,d), (a,d)} and R2 = {(a,t), (a,d), (t,f)}
{(a,a), (c,d), (a,d), (a,t),(t,f)}
{(a,d)}
Empty Set
{a,b,c,d,t,f}
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose A = {a,b,c,d} and B = {a,d,t,f}
And
R1 = {(a,a), (c,d), (a,d)} and R2 = {(a,t), (a,d), (t,f)}
What is R1 - R2?
{(a,t), (t,f)}
{a,a,c,d}
Empty Set
{(a,a), (c,d)}
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose A = {a,b,c,d} and B = {a,d,t,f}
And
R1 = {(a,a), (c,d), (a,d)} and R2 = {(a,t), (a,d), (t,f)}
What is R2 - R1?
{(a,t), (t,f)}
{a,d,t,f}
Empty Set
{(a,a), (c,d)}
5.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
In a reflexive closure, what does represent?
(a)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is reflexive closure of
R = {(1,3), (4,2)}
Empty Set
{(1,3), (4,2)}
{(1,1), (2,2), (3,3) ,(4,4)}
{(1,1), (2,2), (1,3), (3,3) ,(4,2),(4,4)}
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is diagonal relation of
R = {(1,3), (4,2)}
Empty Set
{(1,3), (4,2)}
{(1,1), (2,2), (3,3) ,(4,4)}
{(1,1), (2,2), (1,3), (3,3) ,(4,2),(4,4)}
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