Discrete Structure Exams By: Ishrat Hayat Malik
17 Questions
| Attempts: 750
Questions and Answers
- 1.Difference between continuous and discrete values with example...
- 2.A:x is prime b: x is odd What is the truth value of a--->b when x is 2, why is this true explain
- 3.The Cartesian Product B x A is equal to the Cartesian product A x B. If it is true then why and if it is false why false
- 4.What is the difference between OR and XOR and why XOR is called XOR
- 5.A compound proposition that is always ___________ is called a tautology
- A.
True
- B.
False
- C.
None
- 6.3. If A is any statement, then which of the following is a tautology?
- A.
A ∧ F
- B.
A ∨ F
- C.
A ∨ ¬A
- 7.The set O of odd positive integers less than 10 can be expressed by
- A.
{1, 2, 3}
- B.
{1, 3, 5, 7, 9}
- C.
{1, 2, 5, 9}
- D.
{1, 5, 7, 9, 11}
- 8.The universal quantifier is used to assert a property of [Blank] values of a variable in a particular domain
- 9.Power set of empty set has exactly _________ subset.
- A.
1
- B.
2
- C.
3
- D.
4
- 10.What is the Cartesian product of A = {1, 2} and B = {a, b}?
- A.
{(1, a), (1, b), (2, a), (b, b)}
- B.
{(1, 1), (2, 2), (a, a), (b, b)}
- C.
{(1, a), (2, a), (1, b), (2, b)}
- 11.The Cartesian Product B x A is equal to the Cartesian product A x B. Is it True or False?
- A.
True
- B.
False
- C.
None
- 12.What is the cardinality of the set of odd positive integers less than 10?
- A.
10
- B.
5
- C.
3
- D.
20
- 13.What is the Cardinality of the Power set of the set {0, 1, 2}.
- A.
8
- B.
6
- C.
7
- D.
9
- 14.Which of the following two sets are equal?
- A.
A = {1, 2} and B = {1}
- B.
A = {1, 2} and B = {1, 2, 3}
- C.
A = {1, 2, 3} and B = {2, 1, 3}
- D.
) A = {1, 2, 4} and B = {1, 2, 3}
- 15.All of the x values or inputs are called what?
- A.
Range
- B.
Domain
- C.
Image
- 16.In the given relation, what domain value corresponds to the range value -2? {(-1,2), (-2,4), (2,5), (0,-2), (2,0)}
- A.
-2
- B.
2
- C.
4
- D.
0
- 17.
Is the relation a function? Why.- A.
Yes, because the x-value 11 has two y-values pair with it.
- B.
Yes, because each x-value has only one y-value paired with it.
- C.
No, because the x-value 11 has two y-values pair with it
- D.
No, because each x-value has only one y-value paired with it.
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