Question

Suppose a crime was committed. The victim, Abel, says he did not bleed, but that the perpetrator did. We also know that the perpetrator was someone in this class. The blood at the crime scene is type O. How many people in this class could be the perpetrator?

Answer 1

Answer: The number of students that there blood type is type O

Explanation:

With simple analogy, Abel is a member of a class, and Abel was not hurt , he is a victim.

The perpetrator is a member of a class (fact 1) and the blood type found on the crime scene is type O(fact 2). To draw conclusion,

The perpetrator is possibly someone from the class with a type O blood type. So a narrow research should be carried out on the blood type of the students in a class and to be more precise , someone who just got hurt , a clear injury and has a blood type of type O would be the possible perpetrator.