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Data Sufficiency - Verbal and Reasoning

Directions to SolveIn each of the following problems, there is one question and three statements I, II and III given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find which of the statements is/are sufficient to answer the given question. Choose the correct alternative in each question.
Q1:

Question: Who among Siddhartha, Nikunj, Vipul and Mukul is the youngest? Statements:
  1. Vipul is younger than Mukul but older than Siddhartha and Nikunj.
  2. Mukul is the oldest.
  3. Siddhartha is older than Nikunj.

A Only I

B Only I and II

C Only II and III

D Only I and III

E None of these

ANS:D - Only I and III

Explanation: From I, we have: M > V, V > S, V > N ...(i) From II, we have: Mukul is the oldest ...(ii) From III, we have: S > N ...(iii) Combining (i) and (iii), we get :M > V, V >S > N or M>V > S > N. Clearly, Nikunj is the youngest.