Reasoning Ability - MCQ Practice Questions

Since no criminal is honest, it means all criminals must be dishonest (contrapositive of the first statement).

Since some decision makers are not politicians, and all leaders are decision makers, some leaders must not be politicians.

While no student is lazy, and lazy people are unsuccessful, this doesn't tell us about unsuccessful students who might be lazy or for other reasons.

Since all engineers are technical, it means at least some technical people must be engineers.

Since no metal is a liquid at room temperature, the statement 'Some liquids are metals' is definitely false.

Since all A are B, all B are C, and some C are not D, it follows that some A are not D (as some of C are not D).

Although some intelligent people are not ambitious, this doesn't mean they are not successful through other means.

Since all X are Y and no Y is Z, by logical deduction, no X can be Z.

While some knowledgeable people are not wise, we cannot determine if the non-wise ones include teachers or not.

Since no vegetarian is a meat-eater and all carnivores are meat-eaters, it follows that no vegetarian is a carnivore.

While some problem solvers are not creative, some software engineers might still be creative - this is possible but not definite.

While all fruits are nutritious, only some nutritious foods are expensive, so we cannot determine which fruits are expensive and therefore unavailable.

From the given statements, we cannot establish a definite relationship between cricketers and disciplined individuals. The second statement only tells us some athletes are disciplined, but doesn't specify if those athletes include cricketers.

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.