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Which logical operator represents the biconditional or 'if and only if' operation?

↔.

∨.

¬.

∧.

What is the value of (∃x)(x² = -1) if the domain is all real numbers (x ∈ ℝ)?

Cannot be determined.

False.

True.

Depends on the value of x.

In the truth table in the figure, x represented symbollically is:

p ⟹ q.

p ∧ q.

p ⟺ q.

p ∨ q.

Which of the following is the symbol for 'implies' in logic?

∨.

→.

∧.

¬.

Given that

p: John is a Cameroonian

q: John is bilingual,

the statement ‘If John is bilingual then he is a Cameroonian’ can be represented as:

p → q.

q → p.

q → ~ p.

p → ~q.