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For which of the following values of x is the mode of 2x, x [#permalink]
24 Nov 2017, 20:41
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For which of the following values of x is the mode of 2x, x + 5, 3x − 2, 5x − 7, and 4x equal to 4 ? A. 2 B. 3 C. 4 D. 5 E. 7 Drill 1 Question: 7 Page: 522
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Re: For which of the following values of x is the mode of 2x, x [#permalink]
02 Dec 2017, 10:48
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sandy wrote: For which of the following values of x is the mode of 2x, x + 5, 3x − 2, 5x − 7, and 4x equal to 4 ? A. 2 B. 3 C. 4 D. 5 E. 7 Drill 1 Question: 7 Page: 522 Mode means in a set of data values the value that appears most often Now for the set 2x, x + 5, 3x − 2, 5x − 7, and 4x Consider x= 2 , we have 4 , 9, 4, 3, 8 Consider x= 3 , we have 6, 8, 7, 8, 12 Consider x= 4 , we have 8, 9, 10, 13, 16 Consider x= 5 , we have 10, 10, 13, 22, 20 Consider x= 7 , we have 14, 12, 19, 28, 28 Thus mode is 4; when x= 2.
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GMAT Club Legend
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Re: For which of the following values of x is the mode of 2x, x [#permalink]
10 Dec 2017, 13:14
ExplanationRemember that mode means the number that appears “most often.” Plug In the Answers. For choice (C), if x = 4, then the numbers become: 8, 9, 10, 13, 16. For a list of numbers to have a mode, there has to be at least two of one of the numbers. So this list has no mode; eliminate choice (C). For choice (A), if x = 2, then the numbers become: 4, 7, 4, 3, 8. Because 4 appears twice, 4 is the mode—the answer is choice A.
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Re: For which of the following values of x is the mode of 2x, x
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