Six persons D, E, F, G, H, and I have different heights. Who is the tallest person? Statement I: F is shorter than
D. G is taller than I but shorter than F. H is taller than D but not the tallest. Statement II: G is shorter than
D. D is taller than
I. H is taller than F but shorter than E. F is taller than G but shorter than
D.

From Statement I, F is shorter than D. G is taller than I but shorter than F. H is taller than L but not the tallest. We get: E (tallest) > H > D > F > G > I (shortest) From statement I alone, we get E is the tallest person. From Statement II, G is shorter than D. D is taller than I. H is taller than F but shorter than E. F is taller than G but shorter than D. We get: Case 1: E > H > D > F > G/I > I/G Case 2: E > D > H > F > G/I > I/G Case 3: D > E > H > F > G/I > I/G From statement II alone, we get either E or D is the tallest person. Therefore, data given in statement I alone is sufficient to answer the question.