CJBAT Logical Reasoning Questions & Answers

Question 1

If all humans are mammals and some mammals are cats, which of the following is true?

Accepted Answer

None of the above.

Answer

This is a logical fallacy question. While all humans are mammals and some mammals are cats, the premises do not establish any direct overlap between humans and cats. The 'some mammals' that are cats could be entirely separate from humans, meaning we cannot logically conclude that any humans are cats or vice-versa. Therefore, none of the given options can be definitively proven true.

Question 2

If a car is parked in the garage and the door is closed, which of the following must be true?

Accepted Answer

The car is inside the garage.

Answer

The statement explicitly says, 'a car is parked in the garage.' This directly indicates the car's location. The fact that the door is closed further confirms that the car is contained within the garage, making 'The car is inside the garage' the only certain conclusion.

Question 3

Which of the following is the best conclusion based on the premise: All students in class A passed the exam?

Accepted Answer

All students in class A passed the exam.

Answer

The best conclusion based on a premise is often the premise itself, especially when the premise is a definitive statement of fact. Options A, B, and D introduce new information or generalize beyond what was stated, making them assumptions rather than direct, undeniable conclusions. A valid conclusion must be directly and fully supported by the given information.

Question 4

If all roses are flowers and all flowers need sunlight, which of the following is true?

Accepted Answer

Roses need sunlight.

Answer

This is a classic syllogism. Since all roses are a type of flower, and all flowers universally require sunlight, it logically follows that roses, being a subset of flowers, must also require sunlight. The property of needing sunlight is transferred from the larger category (flowers) to its specific members (roses).

Question 5

If a number is divisible by both 2 and 3, which of the following must it also be divisible by?

Accepted Answer

It is divisible by 6.

Answer

If a number is divisible by two prime numbers, it must also be divisible by their product. Since 2 and 3 are prime numbers, any number divisible by both 2 and 3 must also be divisible by 2 multiplied by 3, which is 6. This is a fundamental rule of divisibility in number theory.

CJBAT Test Practice Test

CJBAT Test Practice Test

CJBAT Logical Reasoning Questions & Answers