# Logical Reasoning - Logical Problems

### Exercise :: Logical Problems - Type 4

The logic problems in this set present you with three true statements: Fact 1, Fact 2, and Fact 3. Then, you are given three more statements (labeled I, II, and III), and you must determine which of these, if any, is also a fact. One or two of the statements could be true; all of the statements could be true; or none of the statements could be true. Choose your answer based solely on the information given in the first three facts.
11.

 Fact 1: Islands are surrounded by water. Fact 2: Maui is an island. Fact 3: Maui was formed by a volcano.
If the first three statements are facts, which of the following statements must also be a fact?
 I: Maui is surrounded by water. II: All islands are formed by volcanoes. III: All volcanoes are on islands.

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

Explanation:

Since Maui is an island and islands are surrounded by water,Maui must be surrounded by water. There is not enough information to support statements II and III.

12.

 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.