A data set has a mean of 15 and consists of 4 numbers. If 3 of the numbers are 17, 20, 19, what is the remaining number?
Difficulty: Medium
About this MCQ
Medium GMAT item. Correct choice: C. 4.
- A. 9
Why not A: “9” is not 4.
- B. -1
Why not B: “-1” is not 4.
- C. 4 ✓
- D. 15
Why not D: “15” is not 4.
Correct answer
C. 4
Explanation
4 (option C) is the accepted answer to “A data set has a mean of 15 and consists of 4 numbers. If 3 of the numbers are 17, 20, 19, what is the remaining number”. Option A (9) is a different value from 4. Option B (-1) is a different value from 4. Option D (15) is a different value from 4. Keep 4 as the GMAT fact for this stem.
Source: Original practice question, MCQsHub
Tags: American Exams, Quant, Statistics, GMAT
Submitted by: MCQsHub Editorial
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