Civil Service Exam Reviewer · Logical Reasoning · hard

Assume the following statements are true: 1. All civil service eligibles are city hall employees. 2. Some clerks are not city hall employees. Which conclusion MUST be true?

  1. All civil service eligibles are clerks.
  2. No civil service eligibles are clerks.
  3. Some clerks are not civil service eligibles.
  4. None of these conclusions necessarily follows.

Answer

C. Some clerks are not civil service eligibles.

Solution

Some clerks are outside the group of city hall employees, but all civil service eligibles are inside it. So those clerks cannot be civil service eligibles: some clerks are not civil service eligibles. The other choices may or may not be true, so they do not necessarily follow.

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