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Railways PYQCBT 2 2017

RRB NTPC · Question 42

A question and two statements labeled (I), (II) are given. You have to decide which statement(s) is/are sufficient to answer the question. Gowtham ranks eighteenth in a class. What is his rank from the last? I. There are 47 students in the class. II. Jegan who ranks 10^th in the same class, ranks 38^th from the last.

  1. Statement I alone is sufficient.

  2. Both the statements together are needed.

  3. Statement II alone is sufficient.

  4. Either I or II alone is sufficient.

Show answer & explanation

Answer: (D) Either I or II alone is sufficient.

Explanation

Statement I: with 47 students, Gowtham's rank from the last = 47 − 18 + 1 = 30. Statement II: Jegan is 10th from the top and 38th from the last, so the class has 10 + 38 − 1 = 47 students, which again gives 30. Either statement alone is sufficient.