Logical reasoning questions for practice

1. If no A is B, and all C are B, which of the following must be true?

All A are C

No A are C

Some A are C

Some C are not A

2. The athlete's _____ performance in the championship game secured her team's victory.

mediocre

lackluster

stellar

inconsistent

3. Is x a multiple of 3? Statement 1: x is an even number. Statement 2: The sum of the digits of x is divisible by 3.

Statement 1 alone is sufficient

Statement 2 alone is sufficient

Both statements together are sufficient

Both statements together are not sufficient

4. TEACHER : CLASSROOM :: JUDGE : ?

Law

Courtroom

Verdict

Lawyer

5. A nutritionist claims that consuming probiotics improves digestive health. In a study, participants who took probiotic supplements reported fewer digestive issues. Which of the following, if true, would most weaken the nutritionist's claim?

The study was funded by a company that produces probiotic supplements

Some participants in the study also made dietary changes during the trial period

The placebo group in the study also reported improvements in digestive health

Probiotic supplements can cause mild side effects in some people

6. The politician's ______ approach to the contentious issue, refusing to take a clear stance, left voters feeling ______ about his true position.

decisive, certain

ambiguous, confused

forthright, skeptical

nuanced, informed

7. The critic's ______ review of the film, which pointed out both its strengths and weaknesses, provided readers with a ______ assessment of its merits.

biased, fair

balanced, comprehensive

harsh, positive

glowing, critical

8. PAUCITY : PLETHORA ::

Few : Many

Scarce : Abundant

Rare : Common

Limited : Extensive

9. If you practice regularly, you'll improve your skills. Your skills have improved. Therefore, you must have practiced regularly. This reasoning is:

Modus ponens

Modus tollens

Affirming the consequent

Denying the antecedent

10. All metals conduct electricity. This material conducts electricity. Therefore, this material is a metal. This argument is:

Valid

Sound

Invalid

Both valid and sound