Free GMAT Practice Questions

Question 1 of 40
ID: GMAT-DI-DS-001
Section: Data Insights - Data Sufficiency (DS)
Topic: Statistics
Difficulty level: Hard

Practice Mode: Questions of Section » Back to Overview

On each of $7$ consecutive days, a technician recorded the water used by a certain building that day, in litres, obtaining $7$ values that were not necessarily all different. Is the range of the $7$ values greater than $30$ litres? (The range of a list of numbers is the greatest number in the list minus the least number in the list.)

The greatest of the $7$ values is $96$ litres, and the average (arithmetic mean) of the $7$ values is less than $70$ litres.
The sum of the $3$ least of the $7$ values is $150$ litres, and the sum of the $3$ greatest of the $7$ values is $264$ litres.

AStatement (1) ALONE is sufficient, but statement (2) ALONE is not sufficient to answer the question asked.

BStatement (2) ALONE is sufficient, but statement (1) ALONE is not sufficient to answer the question asked.

CBOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.

DEACH statement ALONE is sufficient to answer the question asked.

EStatements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

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