Five pens D, E, F, G and H are kept one above the other (not necessarily in the same order).
Only H is between E and F. F is below E. G is just below F. D is three places below H.
How many pens are between E and D?1
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Five pens D, E, F, G and H are kept one above the other (not necessarily in the same order).
Only H is between E and F. F is below E. G is just below F. D is three places below H.
How many pens are between E and D?