Question

3. The following three items consist of four statements. Of these four statements, two cannot be true and cannot be false simultaneously. Read the statements carefully and identify the two statements that satisfy the above condition. Select the correct answer using the codes given below the set of statements:
1. All fans need electricity
2. Some fans need electricity
3. No fans need electricity
4. Some fans do not need electricity

• A. Only 2 and 4
• B. Only 1 and 2
• C. Only 2 and 3
• D. Only 1 and 3

Answer 1

The correct option is A Only 2 and 4

(2) and (4) – Both can be true at the same time and both can also be false.
(1) and (2) – Both cannot be true at the same time.
(3) and (4) – Both can be true but both cannot be false.
(1) and (3) – Both cannot be true at the same time.