Statements:
No pen is box.
No box is pencil.
No pencil is eraser.
Conclusions:
I. No pen is pencil.
II. No eraser is pencil.
III. Some pens are not boxes.
No pen is box(E) + No box is pencil(E) No conclusion. Hence conclusion I does not follow No pencil is eraser(E) Conversion No eraser is pencil (I). Hence conclusion II follows. No box is pencil(E) Conversion Some pens are not boxes(O). Hence conclusion III follows.
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