GATE2019: GA-2

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.

1. $1$ and $2$
2. $3$
3. $4$
4. $2$ and $3$

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