Question 1

Some A are B. Some C are A. Conclusions: I. Some C are B. II. Some B are A.

Accepted Answer

Solution: only II. "Some A are B" is the same as "Some B are A"; two 'some' statements never link C to B.

Question 2

No women can vote. Some women are politicians. I. Male politicians can vote. II. Some politicians can vote.

Accepted Answer

Solution: neither. Nothing is said about who can vote; the women politicians cannot, the rest are unknown.

Question 3

All dolls are windows. All bottles are windows. All cars are bottles. I. All cars are windows. II. Some cars are dolls. III. Some windows are cars.

Accepted Answer

Solution: I and III. Cars sit inside bottles inside windows; dolls are also inside windows but need not meet cars.

Question 4

What are the common traps in 2-3 statements, conclusions follow? questions?

Accepted Answer

Possible ≠ certain: "Some yachts are boats" can be drawn, but it can also be undrawn, so it does not follow. Reversed 'All': All A are B does not give All B are A. 'Only a few': it also says some are not; "Some plants are not gardens" follows from "Only a few plants are gardens".

2-3 statements, conclusions follow?

The idea

Textbook vs exam method

Textbook method

Exam method

What's ahead in 2-3 statements, conclusions follow?