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A small library has books on twenty | GMAT | DI | DS | Medium | OG

A small library has books on twenty | GMAT | DI | DS | Medium | OG
A < 1 min read

Question

A small library has books on twenty different subjects including, most prominently, history. One afternoon, a librarian arbitrarily picks up 100 books for reshelving from among the books returned that day…..

A small library has books on twenty different subjects

Solution : A small library has books on twenty different subjects …

Watch the video solution to see “owning the dataset” approach come to life on this question.

Question Attributes

  • Source: Official Guide
  • Difficulty Level: Medium – 79% accuracy
  • Question Type: Data Sufficiency
  • Category: Non-Math

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Summary – ­A small library has books on twenty different subjects …

To master DS questions, adhere to the following steps:

  1. Thoroughly analyze the Question stem by actively translating, drawing inferences, and visualising information.
  2. Determining the exact criteria for marking a statement sufficient or insufficient.
  3. Evaluate each statement and eliminate choices appropriately.

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