LEAB Deductive & Inductive Reasoning 3 — Questions and Answers
Question 1: Study the sequence of incident numbers: 1021, 1024, 1027, 1030, ____. What is the next number?
- 1032
- 1033 (Correct answer)
- 1034
- 1035
Correct answer: 1033
Each number increases by 3, so 1030 + 3 = 1033.
Question 2: All felonies require a written incident report. All written incident reports must be reviewed by a supervisor. Detective Nguyen documents a felony. Which must follow?
- Nguyen's report must be reviewed by a supervisor (Correct answer)
- Nguyen's report may be filed without review
- Only misdemeanors require supervisor review
- Supervisor review is optional for detectives
Correct answer: Nguyen's report must be reviewed by a supervisor
By chaining both rules: felony → written report → supervisor review, so the supervisor must review Nguyen's report.
Question 3: A detective reviews burglary data: January 8 cases, February 12 cases, March 16 cases, April 20 cases. If the trend continues, how many cases are expected in May?
- 22
- 24 (Correct answer)
- 26
- 28
Correct answer: 24
Cases increase by 4 each month, so May is projected at 20 + 4 = 24 cases.
Question 4: Officers observe that every car speeding through a school zone in the past month was traveling more than 15 mph over the limit. An inductive conclusion from this data is:
- Speed limits in school zones are never enforced
- Speeders in that zone tend to significantly exceed the limit, not marginally (Correct answer)
- No one speeds less than 15 mph over the limit anywhere in the city
- School zones should eliminate speed limits
Correct answer: Speeders in that zone tend to significantly exceed the limit, not marginally
The observed data supports the specific conclusion about that zone's pattern, not a city-wide universal claim.
Question 5: Rule: A vehicle may only be towed if it is illegally parked AND has been there for more than 2 hours OR it is blocking a fire hydrant. A car has been illegally parked for 3 hours but is not blocking a hydrant. Can it be towed?
- No, because it is not blocking a fire hydrant
- Yes, because it meets the illegally parked AND over 2 hours condition (Correct answer)
- No, because both conditions require the fire hydrant
- Yes, but only with supervisor approval
Correct answer: Yes, because it meets the illegally parked AND over 2 hours condition
The rule has two independent grounds for towing; the car satisfies the first (illegally parked + over 2 hours).
Question 6: An investigator notes that of 30 DUI arrests last quarter, 27 occurred between 10 PM and 3 AM. What is the strongest inductive inference for patrol scheduling?
- DUI enforcement is unnecessary during daytime hours
- Concentrating DUI patrols during 10 PM–3 AM is likely to be most effective (Correct answer)
- The three non-nighttime DUIs indicate daytime patrols are equally important
- DUI patterns are too random to schedule around
Correct answer: Concentrating DUI patrols during 10 PM–3 AM is likely to be most effective
90% of DUIs occurring in that window inductively supports concentrating resources there.
Question 7: No officer may work more than 16 consecutive hours without mandatory rest. Officer Torres began her shift at 6 AM. It is now 10 PM. A supervisor asks her to work 2 more hours. Is this permissible?
- Yes, because she has not reached 16 hours yet
- No, because 2 more hours would bring her to 18 consecutive hours (Correct answer)
- Yes, supervisors can override rest rules in emergencies
- No, the limit is 12 hours for patrol officers
Correct answer: No, because 2 more hours would bring her to 18 consecutive hours
6 AM to 10 PM is 16 hours; adding 2 more would reach 18, violating the 16-hour maximum.
LEAB Deductive & Inductive Reasoning 3
Study the sequence of incident numbers: 1021, 1024, 1027, 1030, ____.
What is the next number?