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A certain list consists of 21 different numbers. If n is in the list a

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Joined: 15 Aug 2018
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GMAT 1: 740 Q47 V45
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A certain list consists of 21 different numbers. If n is in the list a  [#permalink]

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New post 08 Jan 2019, 07:55
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A certain list consists of 21 different numbers. If n is in the list and n is 4 times the average (arithmetic mean) of the other 20 numbers in the list, then n is what fraction of the sum of the 21 numbers in the list?

A) 1/20

B) 1/6

C) 1/5

D) 4/21

E) 5/21

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Re: A certain list consists of 21 different numbers. If n is in the list a  [#permalink]

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Re: A certain list consists of 21 different numbers. If n is in the list a   [#permalink] 08 Jan 2019, 07:57
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A certain list consists of 21 different numbers. If n is in the list a

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