LAPD Logical and Deductive Reasoning 2 — Questions and Answers
Question 1: All officers assigned to the night shift must complete a safety briefing. Officer Torres is on the night shift. Which conclusion is valid?
- Officer Torres may or may not complete the briefing
- Officer Torres must complete the safety briefing (Correct answer)
- Officer Torres is exempt if she has prior training
- Officer Torres completes briefings only on weekdays
Correct answer: Officer Torres must complete the safety briefing
Since all night-shift officers must complete the briefing and Torres is on the night shift, she must complete it.
Question 2: A suspect was seen leaving the building at 9:00 PM. The crime occurred between 8:45 PM and 9:15 PM. What can be concluded?
- The suspect definitely committed the crime
- The suspect has an alibi for the entire window
- The suspect cannot be ruled out based on timing alone (Correct answer)
- The suspect must be arrested immediately
Correct answer: The suspect cannot be ruled out based on timing alone
The suspect's departure falls within the crime window, so timing alone does not exonerate or convict them.
Question 3: No patrol car in Division A is more than 3 years old. Unit 47 is a patrol car in Division A. What follows logically?
- Unit 47 is less than 1 year old
- Unit 47 is not more than 3 years old (Correct answer)
- Unit 47 may be older than 3 years
- Unit 47 was recently repaired
Correct answer: Unit 47 is not more than 3 years old
The universal rule that no Division A car exceeds 3 years applies directly to Unit 47.
Question 4: If a witness is reliable, their testimony is recorded. Witness A's testimony was NOT recorded. What can be deduced?
- Witness A was not present at the scene
- Witness A is not a reliable witness (Correct answer)
- Witness A refused to cooperate
- Witness A's testimony was irrelevant
Correct answer: Witness A is not a reliable witness
Using contrapositive logic: if testimony was not recorded, the witness cannot be reliable.
Question 5: Five officers stand in a line by seniority. Officer Green is more senior than Officer White but less senior than Officer Black. Officer Red is the least senior. Where does Officer White rank?
- White is the most senior
- White is more senior than Black
- White is less senior than Green (Correct answer)
- White and Green have equal seniority
Correct answer: White is less senior than Green
Black > Green > White, and Red is least senior, so White is less senior than Green.
Question 6: A report states: 'Either the back door or the window was used as the entry point, but not both.' Investigators confirmed the window was used. What follows?
- The back door was also used
- The back door was not used (Correct answer)
- Both entry points may have been used
- The entry point cannot be determined
Correct answer: The back door was not used
An exclusive 'or' means exactly one is true; since the window was used, the back door was not.
Question 7: Every time burglaries increase in Sector 7, foot patrols are doubled. Foot patrols in Sector 7 are currently at normal levels. What can be concluded?
- Burglaries in Sector 7 have increased
- Burglaries in Sector 7 have not increased (Correct answer)
- Foot patrols will be doubled soon
- Sector 7 is a low-crime area
Correct answer: Burglaries in Sector 7 have not increased
Contrapositive: if patrols are not doubled, burglaries have not increased.
LAPD Logical and Deductive Reasoning 2
All officers assigned to the night shift must complete a safety briefing.
Officer Torres is on the night shift.
Which conclusion is valid?