Statements: All letters are digits.
No number is a digits.
Some words are letters.
Conclusions: I. Some words are not numbers.
II. All letters being numbers is a possibility.
III. All digits being words is a possibility.
Some words are letters (I) + All letters are digits (A) ⇒ Some words are digits (I) + No number is a digits (E) ⇒ conversion ⇒ No digits is a number (E) ⇒ Some words are not numbers(O*). Hence conclusion I follows. All letters are digits (A) + [No number is a digits (E)] ⇒ conversion ⇒No digits is a number (E) ⇒ No letter is a number(E). Hence conclusion II does not follow. All letters are digits(A) ⇒ Probable conclusion ⇒ All digits may be words(A). Hence, conclusion III follows.
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