New Jersey Civil Service Exam Logical and Deductive Reasoning 2 — Questions and Answers
Question 1: All county clerks must complete ethics training. Maria is a county clerk. Which conclusion is logically valid?
- Maria may or may not complete ethics training
- Maria must complete ethics training (Correct answer)
- Some county clerks skip ethics training
- Ethics training is optional for Maria
Correct answer: Maria must complete ethics training
Since all county clerks must complete ethics training and Maria is a county clerk, Maria must complete ethics training.
Question 2: A supervisor notices that every time workload increases, employee errors increase. This week workload decreased. What can the supervisor logically conclude?
- Errors will definitely decrease
- Errors will definitely increase
- No certain conclusion about errors can be drawn (Correct answer)
- Errors will remain the same
Correct answer: No certain conclusion about errors can be drawn
Knowing that increased workload causes increased errors does not tell us what happens when workload decreases — the relationship may not be reversible.
Question 3: If a civil service applicant scores below 70, they are disqualified. James scored 72. Which statement is correct?
- James is disqualified
- James is guaranteed a job offer
- James is not disqualified based on the score (Correct answer)
- James must retake the exam
Correct answer: James is not disqualified based on the score
James scored 72, which is above 70, so he is not disqualified under this rule.
Question 4: No parking violations were issued on holidays. Ticket #4821 was issued on a holiday. What can be deduced?
- Ticket #4821 is valid
- Ticket #4821 must be an error (Correct answer)
- Holidays have no traffic rules
- Ticket #4821 was issued by a different agency
Correct answer: Ticket #4821 must be an error
Since no parking violations are issued on holidays, ticket #4821 issued on a holiday must be an error.
Question 5: Statement: 'Some inspectors are also licensed engineers.' Which of the following is a valid conclusion?
- All inspectors are licensed engineers
- No inspectors are licensed engineers
- At least one inspector is a licensed engineer (Correct answer)
- All licensed engineers are inspectors
Correct answer: At least one inspector is a licensed engineer
'Some' means at least one, so at least one inspector is a licensed engineer.
Question 6: A pattern shows the number sequence: 3, 6, 12, 24, ___. What is the next number?
- 36
- 48 (Correct answer)
- 30
- 42
Correct answer: 48
Each number is doubled: 3×2=6, 6×2=12, 12×2=24, 24×2=48.
Question 7: Officer A works every Monday and Thursday. Officer B works every Tuesday and Thursday. On which day do both officers work?
- Monday
- Tuesday
- Thursday (Correct answer)
- Neither works the same day
Correct answer: Thursday
Thursday appears in both officers' schedules, making it the day they both work.
New Jersey Civil Service Exam Logical and Deductive Reasoning 2
All county clerks must complete ethics training.
Maria is a county clerk.
Which conclusion is logically valid?