If the statement 'Some golf players are not rich persons' is given as false, which of the following statements can be inferred to be true?
1.All golf players are rich persons
2.Some golf players are rich persons
3.No golf players are rich persons
4.Some rich persons are golf players
A1 & 4 only
B2 & 3 only
C1, 2 & 4 only ✓ Correct
D1, 2 & 3 only
Correct answer: (C) 1, 2 & 4 only
Explanation
Since the O Some golf players are not rich is false, its contradictory A All golf players are rich is true.
In the square, A and O are contradictories, so falsity of one forces truth of the other.
The true A yields by subalternation the I Some golf players are rich, Statement 2.
That I converts validly to Some rich persons are golf players, Statement 4.
So Statements 1, 2 and 4 are true, while the E in Statement 3 is false.
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