MCQ Subject: Logical Reasoning

If all GATE exams are competitive, and all competitive exams have difficult questions, then which of the following conclusions is logically valid?

Consider a relation R on a set A. Which of the following statements is TRUE?

All novels are bestsellers. Some bestsellers are award-winning. What can be definitely concluded?

Consider the statements: 1. All successful Entrepreneurs are Risk-Takers. 2. Some Risk-Takers are not Managers. Which of the following is NOT a logical conclusion?

If all GATE CS exams are tough, and all tough exams require intense preparation, which of the following logically concludes from the premises?

If it is true that all successful Entrepreneurs are Risk-Takers and some Risk-Takers are not Managers, which of the following can be logically concluded?

Statements: 1. All engineers are knowledgeable about mathematics. 2. Some mathematicians are not engineers. Which conclusion is definitely true?

An argument reads: ‘If a device is energy-efficient, it is approved by the regulatory body. Some devices approved by the regulatory body are also cost-effective.’ Which of the following conclusions is most logically supported by the argument?

The relationship between ‘Painter’ and ‘Brush’ is similar to the relationship between ‘Writer’ and which of the following?

If all historians are researchers, and some researchers are philosophers, which conclusion is necessarily true?