Crossover Aptitude Test Logical Reasoning: Syllogisms 2

Question 1

All engineers are problem-solvers. Some problem-solvers are creative. Which conclusion follows?
A) All engineers are creative.
B) Some engineers may be creative.
C) No engineers are creative.
D) All creative people are engineers.

Accepted Answer

Some engineers may be creative.

Answer

Since only SOME problem-solvers are creative, we can only say some engineers may be creative, not all.

Question 2

No reptiles are warm-blooded. All snakes are reptiles. Which conclusion is valid?

Accepted Answer

No snakes are warm-blooded.

Answer

Since all snakes are reptiles and no reptiles are warm-blooded, it follows that no snakes are warm-blooded.

Question 3

All fruits contain seeds. Mangoes are fruits. Tomatoes are fruits. Which must be true?

Accepted Answer

Both mangoes and tomatoes contain seeds.

Answer

Since both mangoes and tomatoes are fruits and all fruits contain seeds, both must contain seeds.

Question 4

Some doctors are researchers. All researchers publish papers. Which conclusion is valid?

Accepted Answer

Some doctors publish papers.

Answer

The doctors who are also researchers must publish papers, so some doctors publish papers.

Question 5

All A are B. No B are C. Therefore:

Accepted Answer

No A are C.

Answer

If all A are B and no B are C, then A cannot be C since A is entirely within B which excludes C.

Crossover Aptitude Test Practice Test

Crossover Aptitude Test Practice Test

Crossover Aptitude Test Logical Reasoning: Syllogisms 2