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# Problem Sensitivity and Mathematics Study Guide for McGraw-Hill's Police Officer Exam (page 2)

By McGraw-Hill Professional
Updated on Mar 16, 2011

### Eyewitness Descriptions

This type of question requires you to read a list of eyewitness descriptions and then determine which description is most likely the most correct.

Example

Police Officer Huang interviews four witnesses to a murder that occurred outside of a carwash. Each of the witnesses was present at the time of the shooting. They described the perpetrator as follows:

Based on the descriptions provided, which of the four witness statements is most likely to be correct?

(A) Witness No. 1's statement

(B) Witness No. 2's statement

(C) Witness No. 3's statement

(D) Witness No. 4's statement

Answer C is most likely correct, because when all the details from each of the witness's descriptions are compared, witness No. 3 had no details that directly conflicted with those observed by the other witnesses. Witness No. 1 saw a barefoot person, witness No. 2 saw a male, and witness No. 4 saw hair pulled back in a bun and a bruise instead of a tattoo.

### Mathematics

Mathematics may be included on an exam as its own section, or it may be part of the deductive reasoning section of the exam. Regardless of where it is placed within the exam, law enforcement exams that test your ability to perform mathematical processes generally limit the questions to problems involving basic addition, subtraction, multiplication, and division. These questions will be in numerical format and presented as word problems involving mathematical situations that a law enforcement officer is likely to encounter.

Example

The members of the traffic control unit issued the following citations during a recent seven-day period.

Officer Maxim issued 36 citations.

Officer Mendosa issued 107 citations.

Officer Carosa issued 39 citations.

Officer Hussein issued 27 citations.

How many citations were issued by the two traffic control officers writing the most citations for this time period?

(A) 143

(B) 75

(C) 134

(D) 146

The answer is D. 107 + 39 = 146.