Question

Fact $1$: Robert has four vehicles.
Fact $2$: Two of the vehicles are red.
Fact $3$: One of the vehicles is a minivan.
If the first three statements are facts, which of the following statements must also be a fact?
I: Robert has a red minivan.
II: Robert has three cars.
III: Robert's favorite color is red.

• A. I only
• B. II only
• C. II and III only
• D. None of the statements is a known fact.

Answer 1

Answer: (D)

None of the statements is a known fact.

There is not enough information to support any of the statements. Robert is known to have a minivan, but it is not known which of his vehicles is red. Robert may have a pickup or sport utility vehicle, so the second statement cannot be supported. There is no way to know if Robert's favorite color is red(statement III).