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Some students were not involved in the strike. If the above statement is true, which of the following conclusions is/are logically necessary? 1. Some who were involved in the strike were students. 2. No student was involved in the strike. 3. At least one student was involved in the strike. 4. Some who were not involved in the strike were students.

Some students were not involved in the strike. If the above statement is true, which of the following conclusions is/are logically necessary? 1. Some who were involved in the strike were students. 2. No student was involved in the strike. 3. At least one student was involved in the strike. 4. Some who were not involved in the strike were students. Correct Answer 4

The correct answer is '4'.

Key Points 

  • The given statement provides gives the following information:
    • I. There was a strike.
    • II. Some students were not involved in it. This can also be said in this manner: Some who were not involved in the strike were students.
  • Statement 1 is the opposite of II, hence logically unnecessary.
  • Statement 2 cannot be said as we do not have enough information. Hence it is logically unnecessary.
  • Statement 3 cannot be said as we do not have enough information. Hence it is logically unnecessary.
  • Statement 4 is the same as II, hence logically necessary. Hence the correct answer is option 3.

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