Propositions and Compound Statements

A compound proposition that is neither a tautology nor a contradiction is called a ___________

• Contingency

• Equivalence

• Condition

• Inference

A compound proposition that is always ___________ is called a tautology.

• True

• False

A compound proposition that is always ___________ is called a contradiction.

• True

• False

What is the dual of (A ∧ B) v (C ∧ D)?

• (A V B) v (C v D)

• (A V B) ^ (C v D)

• (A V B) v (C ∧ D)

• (A ∧ B) v (C v D)

What is the value of x after this statement, assuming the initial value of x is 5? ‘If x equals to one then x=x+2 else x=0’.

• 1

• 3

• 0

• 2

A compound proposition that is neither a tautology nor a contradiction is called a ___________

• a) Contingency

• b) Equivalence

• c) Condition

• d) Inference

Which of the following statement is a proposition?

• Get me a glass of milkshake

• God bless you!

• What is the time now?

• The only odd prime number is 2

Which of the following option is true?

• If the Sun is a planet, elephants will fly

• 3 +2 = 8 if 5-2 = 7

• 1 > 3 and 3 is a positive integer

• -2 > 3 or 3 is a negative integer

Let P: We should be honest., Q: We should be dedicated., R: We should be overconfident. Then ‘We should be honest or dedicated but not overconfident.’ is best represented by?

• ~P V ~Q V R

• P ∧ ~Q ∧ R

• P V Q ∧ R

• P V Q ∧ ~R

The truth value of ‘4+3=7 or 5 is not prime’.

• False

• True