In each question below, there are three statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follow (s) from the given statement.
Statements : All boxes are tables.
No desks are tables.
Some desks are curtains.
Conclusions : I. No Boxes are desks.
II. Some Boxes are desks.
Ill. Some curtains are not boxes
IV. Some curtains are boxes.
Solution
1. Since all boxes are tables and no table is a desk, it is clear that no box shall be a desk. Hence, true.
2. Invalid with same logic as 1.
3. We know that no table is a desk, making no box a desk. Hence, the curtains which are desks cannot be boxes.
4. We can conclude 3 but we don't have much information to say whether some curtains are boxes.
