Home Subjects Reasoning Ability Syllogism

Reasoning Ability
Syllogism

Critical thinking and logical reasoning questions

21 Q 8 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 1–10 of 21
Topics in Reasoning Ability
Q.1 Medium Syllogism
All poets are creative. No creative person is lazy. Conclusions: I. No poet is lazy. II. Some lazy people are poets. Which conclusion(s) follow?
A Only I follows
B Only II follows
C Both I and II follow
D Neither I nor II follows
Correct Answer:  A. Only I follows
EXPLANATION

All poets are creative, and no creative person is lazy. By transitivity, no poet is lazy. I follows. II contradicts this, so II doesn't follow.

Test
Q.2 Medium Syllogism
Some birds are migratory. All migratory creatures travel long distances. Conclusions: I. Some birds travel long distances. II. All birds travel long distances. Which conclusion(s) follow?
A Only I follows
B Only II follows
C Both I and II follow
D Neither I nor II follows
Correct Answer:  A. Only I follows
EXPLANATION

Some birds are migratory, and all migratory creatures travel long distances. Therefore, some birds (the migratory ones) travel long distances. I follows. II doesn't follow as not all birds are necessarily migratory.

Test
Q.3 Medium Syllogism
All innovators are risk-takers. Some risk-takers are not successful. Conclusions: I. Some innovators are not successful. II. All innovators are unsuccessful. Which conclusion(s) follow?
A Only I follows
B Only II follows
C Both I and II follow
D Neither I nor II follows
Correct Answer:  D. Neither I nor II follows
EXPLANATION

All innovators are risk-takers, but 'some risk-takers are not successful' doesn't tell us which risk-takers. Innovators might be the successful ones. So I doesn't follow. II clearly doesn't follow.

Test
Q.4 Medium Syllogism
In a row of 8 people, A is 3rd from the left. B is 2 positions to the right of A. C is at one end. How many people are between B and C?
A 2
B 3
C 4
D 5
Correct Answer:  B. 3
EXPLANATION

A is 3rd from left. B is 2 positions right of A, so B is at 5th position. C is at one end (either 1st or 8th). If C is 1st, people between = 3 (positions 2,3,4). If C is 8th, people between = 2 (positions 6,7). Most likely C at 1st = 3 people between.

Test
Q.5 Medium Syllogism
All programmers are tech-savvy. Some tech-savvy people are introverts. Conclusions: I. Some programmers are introverts. II. All introverts are programmers. Which conclusion(s) follow?
A Only I follows
B Only II follows
C Both I and II follow
D Neither I nor II follows
Correct Answer:  D. Neither I nor II follows
EXPLANATION

From 'All programmers are tech-savvy' and 'Some tech-savvy people are introverts', we cannot deduce that some programmers are introverts (they could be different tech-savvy people). II is clearly false as introverts are not necessarily programmers.

Test
Q.6 Medium Syllogism
All employees in company X are trained. Some trained people are not productive. What about employees of company X?
A All are productive
B Some may not be productive
C None are productive
D All are unproductive
Correct Answer:  B. Some may not be productive
EXPLANATION

All employees are trained. Some trained people are not productive. Therefore, some employees (being trained) may be among those not productive, so some may not be productive.

Test
Q.7 Medium Syllogism
All athletes are disciplined. Some disciplined people are not wealthy. Conclusion?
A All athletes are not wealthy
B Some athletes may not be wealthy
C No athlete is wealthy
D All wealthy people are athletes
Correct Answer:  B. Some athletes may not be wealthy
EXPLANATION

All athletes are disciplined. Some disciplined people are not wealthy. This means some athletes (being disciplined) could be among those not wealthy. So some athletes may not be wealthy.

Test
Q.8 Medium Syllogism
All mathematicians are analytical. Some analytical people lack creativity. All creative people are successful. Which statement might be true?
A All mathematicians are creative
B All mathematicians are successful
C Some mathematicians may lack creativity
D No mathematician is successful
Correct Answer:  C. Some mathematicians may lack creativity
EXPLANATION

All mathematicians are analytical. Some analytical people lack creativity. Therefore, some mathematicians (being analytical) may lack creativity.

Test
Q.9 Medium Syllogism
No mythical creature is real. All dragons are mythical creatures. Phoenix is a mythical creature. What about Phoenix?
A Phoenix is real
B Phoenix is not real
C Phoenix may or may not be real
D Phoenix is partially real
Correct Answer:  B. Phoenix is not real
EXPLANATION

Phoenix is a mythical creature, and no mythical creature is real. Therefore, Phoenix is not real.

Test
Q.10 Medium Syllogism
All programmers are logical thinkers. No illogical person is successful. Which conclusion is valid?
A All programmers are successful
B Some programmers are successful
C All programmers may be successful
D No programmer is unsuccessful
Correct Answer:  C. All programmers may be successful
EXPLANATION

All programmers are logical thinkers. Since no illogical person is successful, programmers (being logical) are not excluded from being successful. They may be successful.

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