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Question: Who is the tallest among six boys P, T, N, D, Q and R? Statements: P is taller than D and N but not-as tall as T. R is taller than Q but not as tall as T. Q is not taller than T and R.

Only I and II
Only II and III
Only I and III
All I, II and III
Only I and either II or III

Correct Answer: Only I and II

Explanation:

From I, we have: P > D, P > N, T > P i.e. T > P > D > N or T > P > N > D ...(i)

From II, we have: R > Q, T > R i.e. T > R > Q ...(ii)

From III, we have: T > Q, R > Q ...(iii)

Clearly, from (i) and (ii), we conclude that T is taller than each one of P, N, D, R and Q. So, T is the tallest.

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