Reasoning Ability - MCQ Practice Questions

Since all honest people are politicians and no politician is corrupt, it follows that all honest people are not corrupt.

We know some educated people are rich and no rich person is unhappy. Since some doctors are educated (subset), some doctors could be among those rich people, making them not unhappy.

All flowers are plants, all plants require sunlight. Since some things requiring sunlight are expensive, it's possible that some flowers (being things requiring sunlight) are expensive.

All painters are artists. No artist is a businessman. By logical chain, no painter can be a businessman.

All innovations are risky, but we only know some risky ventures fail. We cannot establish that the innovations which are risky are necessarily among those risky ventures that fail.

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

Only some leaders are visionary, not all. Therefore, we cannot conclude all leaders are forward-thinking.

All humans are mammals and all mammals breathe through lungs. Therefore, all humans breathe through lungs. Option D is definitely false.

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

Although mountains are geographical features and some geographical features are tourist attractions, we cannot confirm that the mountains which are geographical features are among those that are tourist attractions.

Some healthy foods are affordable. Since all organic produce is healthy, some organic produce could be among those affordable healthy foods, hence some organic produce may not be expensive.

All depressed people are pessimists. No pessimist is happy. Therefore, no depressed person is happy.

While all renewable sources are sustainable, only some sustainable practices are costly. We cannot establish that all renewable energy sources are among those costly practices.

Only some players are champions. We cannot conclude all players are confident as not all players are necessarily champions.

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

Some lazy people study, and all lazy people are pessimists, and no pessimist achieves success. Therefore, some who study may not achieve success.

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.

While some literary works are award-winning and no award-winning work is forgotten, we cannot confirm that the novels which are literary works are among those award-winning works.

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.

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.