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# Let X be the number (in millions) of persons of voting age in the rang

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Math Expert
Joined: 02 Sep 2009
Posts: 52971
Let X be the number (in millions) of persons of voting age in the rang  [#permalink]

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26 Oct 2017, 23:14
00:00

Difficulty:

95% (hard)

Question Stats:

41% (02:21) correct 59% (02:04) wrong based on 72 sessions

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Let X be the number (in millions) of persons of voting age in the range 25–44 years who lived in the North and West in 1964. Which of the following includes all possible values and only possible values of X?

(A) 0 <= X <= 45
(B) 13 <= X <= 45
(C) 13 <= X <= 78
(D) 45 <= X <= 78
(E) 75 <= X <= 78

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Joined: 05 Dec 2016
Posts: 242
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
Re: Let X be the number (in millions) of persons of voting age in the rang  [#permalink]

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27 Oct 2017, 03:38
1
maximum people=45, when all people of voting age 25-44 lived in North and West
minimum people=13, let's assume that all 45 people of voting age 25-44 lived on South, however there were only 32 people who lived in South that period, so the range 45-32=13 should have lived in North and West for sure.

So, possible range would be: 13 <=X<=45

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Re: Let X be the number (in millions) of persons of voting age in the rang  [#permalink]

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01 Nov 2018, 02:42
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Re: Let X be the number (in millions) of persons of voting age in the rang   [#permalink] 01 Nov 2018, 02:42
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