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QUIZ, Logic

Total questions: 47

Worksheet time: 49mins

Name
Class
Date
1.

A statement that is either true or false but not both.

a)

logic

b)

proposition

c)

predicate

d)

none of the above

2.

Which of the following is a proposition

a)

x + 1 = 5

b)

5 + 2 = 8

c)

N is greater than 5

d)

-5 > n

3.

Which of the following is a proposition?

a)

Divide 10 by 2.

b)

Rica is 5 years old.

c)

How old is Rica?

d)

x > 5

4.

Which of the following is NOT a proposition

a)

x + 1 = 5 , x > 2

b)

5 + 2 = 8

c)

N is greater than 5, for N is odd

d)

5 > n

5.

Give the proposition, "Ruru is at most 160 cm. high" ; What is its negation?

a)

Ruru is more than 160 cm high

b)

Ruru is 160 cm high.

c)

Ruru is less than 160 cm high

d)

Ruru is taller than me.

6.

Given the proposition, "Marco is not a student of BPSU". What is its negation?

a)

Marco takes medicine.

b)

Marco studies at BHMC.

c)

Marco is a student of BPSU.

d)

Marco does not study at BPSU.

7.

Given the proposition "Cataning is not in Samal", what is its negation?

a)

Cataning is in Balanga.

b)

Cataning is in Hermosa.

c)

Cataning is not in Balanga.

d)

Cataning is in Samal.

8.

Given the propositions, p, q and r, rewrite the given compound statements using logical expressions.        Austin does not study at BPSU

a)

¬ 𝒒\neg\ 𝒒

b)

¬ 𝒓\neg\ 𝒓

c)

𝒑  ¬ 𝒒𝒑\ ∧\ \neg\ 𝒒

d)

𝒑  𝒓𝒑\ ∧\ 𝒓

9.
Question Image

Given the propositions, p, q and r, match the logical statement to their English tanslation    

a)

¬ 𝒒\neg\ 𝒒

1.

Austin does not study at BPSU

b)

𝒓  𝒑𝒓\ ∧\ 𝒑

2.

BPSU offers Engineering course and Austin takes Engineering course.

c)

𝒑  ¬ 𝒒𝒑\ ∧\ \neg\ 𝒒

3.

Austin takes Engineering course but does not study at BPSU

d)

𝒓  𝒑𝒓\ →\ 𝒑

4.

Austin takes Engineering course whenever BPSU offers engineering course

e)

(𝒑𝒒)𝒓(𝒑∧𝒒)→𝒓

5.

If Austin takes Engineering course and studies at BPSU then BPSU offers Engineering Course.

10.
13. If the statement p is true and q is false, its disjunction is
a)
True
b)
False
c)
Either
d)
Neither
11.
14. If the statement p is false and q is false, its conjunction is
a)
True
b)
False
c)
Either
d)
Neither
12.
15. The conjunction of two statements, p which has a truth value of true and q which has a truth value of false is
a)
True
b)
False
c)
Either
d)
Neither
13.
16. The biconditional statement p↔q, where p & q have both false as truth value is
a)
True
b)
False
c)
Either
d)
Neither
14.
17. If in the conditional statement p→q, the truth values of p and q are both false , then the conditional statement is
a)
True
b)
False
c)
Either
d)
Neither
15.

Given the propositions: (p) 3 is a prime number. (q) 3 is an even number. and (r) 3n > 6, for n=2; Which of the following is TRUE?

a)

a.

b)

b.

c)

c.

d)

d.

16.

Given the propositions (p) 3 is a prime number.  (q) 3 is an even number. and (r) 3n > 6, for n=2; Which of the following is FALSE?

a)

a.

b)

b.

c)

c.

d)

d.

17.

Given the propositions (p) 3 is a prime number.  (q) 3 is an even number. and (r) 3n > 6, for n=2; What is the truth value of the given logical statement?

a)

a. True

b)

b. False

c)

c. Either

d)

d. Neither

18.

How many rows appear in the truth table of the given compound statements?

a)

4

b)

8

c)

16

d)

32

19.

How many rows appear in the truth table of the given compound statements?

a)

4

b)

8

c)

16

d)

32

20.

Given the truth table, What is the truth value for (23)?

a)

T

b)

F

21.

Given the truth table, What is the truth value for (24)?

a)

T

b)

F

22.

Given the truth table, What is the truth value for (25)?

a)

T

b)

F

23.

Given the truth table, What is the truth value for (26)?

a)

T

b)

F

24.

Given the truth table, What is the truth value for (27)?

a)

T

b)

F

25.

Given the truth table, What is the truth value for (28)?

a)

T

b)

F

26.

Given the truth table, What is the truth value for (29)?

a)

T

b)

F

27.

Given the truth table, What is the truth value for (30)?

a)

T

b)

F

28.

A proposition that is always true.

a)

Contingency

b)

Contradiction

c)

Tautology

d)

Logically equivalent

29.

A proposition that is always false.

a)

Contingency

b)

Contradiction

c)

Tautology

d)

Logically equivalent

30.

A proposition that is neither a tautology nor a contradiction.

a)

Contingency

b)

Contradiction

c)

Tautology

d)

Logically equivalent

31.

34. The given proposition is a

a)

Contingency

b)

Contradiction

c)

Tautology

d)

Logically equivalent

32.

The given proposition is a

a)

Contingency

b)

Contradiction

c)

Tautology

d)

Logically equivalent

33.

Given the combinatorial circuit, what is the output at (36)

a)

a.

b)

b.

c)

c.

d)

d.

34.

Given the combinatorial circuit, what is the output at (37)?

a)

a.

b)

b.

c)

c.

d)

d.

35.

Given the combinatorial circuit, what is the output at (38)?

a)

a.

b)

b.

c)

c.

d)

d.

36.

Given the combinatorial circuit, what is the output at (39)?

a)

a.

b)

b.

c)

c.

d)

d.

37.

Use De Morgan’s Law to express the negation of the statement: Michael will go to Star City or Enchanted Kingdom.

a)

Michael will neither go to Star City nor Enchanted Kingdom.

b)

Michael will either go to Star City or Enchanted Kingdom.

c)

Michael will not go to Star City.

d)

Michael will not go to Enchanted Kingdom.

38.

Use De Morgan’s Law to express the negation of the statement: Homer does not have an internet account and has no Facebook.

a)

Homer has either internet account or Facebook.

b)

Homer has neither internet account nor Facebook

c)

Homer has an internet account.

d)

Homer has Facebook.

39.

Let the statement  x + 1 ≥ 5. What is the truth value of P(4)?

a)

True

b)

False

c)

Either

d)

Neither

40.

Let the statement  x + 1 ≥ 5. What is the truth value of P(-5)?

a)

True

b)

False

c)

Either

d)

Neither

41.

Let D(x, y)  denote the statement “x is the dean of the college of y at BPSU”.  Determine the truth values of D(Rivera, CCST)

a)

True

b)

False

42.

Let D(x, y)  denote the statement “x is a program under the college of y at BPSU”.  Determine the truth values of D(BSCS, CCST).

a)

True

b)

False

43.

Let N(x, y) be the statement “x visited South Korea”, where the domain for x  consists of all BSIT students of BPSU. Express the given quantifications in English: ∃xN(x)

a)

There are BSIT students who has not visited South Korea

b)

Some BSIT students visited South Korea

c)

No BSIT student visited South Korea

d)

Every BSIT student has visited South Korea.

44.

Let N(x, y) be the statement “x visited South Korea”, where the domain for x  consists of all BSIT students of BPSU. Express the given quantifications in English: ∃x¬N(x)

a)

There are BSIT students who has not visited South Korea.

b)

Some BSIT students visited South Korea.

c)

No BSIT student visited South Korea.

d)

Every BSIT student has visited South Korea.

45.

Negate the statement, "There is no one in this class who knows Russian."

a)

Everyone in this class knows Russian

b)

There is one in this class who knows Russian.

c)

Everyone in this class does not know Russian.

d)

I know a Russian.

46.

Determine a counterexample to this universally quantified statement, where the domain for all variable consists of all integers.

a)

-1

b)

1

c)

0

d)

none

47.

Determine a counterexample to this universally quantified statement, where the domain for all variables consists of all integers.

a)

0

b)

-1

c)

both 0 and -1

d)

neither 0 nor -1