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Joined: 01 Nov 2015
Posts: 11
Given Kudos: 73
Location: Russian Federation
Concentration: General Management, Leadership
WE:Other (Other)
Is the average (arithmetic mean) of the seven numbers negative?
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17 Jul 2018, 12:14
17 Jul 2018, 12:14
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List K consists of seven numbers. Is the average (arithmetic mean) of the seven numbers negative?
(1) Four of the seven numbers in list K are negative.
(2) The sum of the seven numbers in list K is negative.
(1) Four of the seven numbers in list K are negative.
(2) The sum of the seven numbers in list K is negative.
Joined: 13 Feb 2018
Posts: 376
Given Kudos: 50
GMAT 1: 640 Q48 V28
Re: Is the average (arithmetic mean) of the seven numbers negative?
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17 Jul 2018, 13:03
17 Jul 2018, 13:03
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1 stm: We cant conclude that the average is negative only because most of the members are negative. Even if one member is positive and is more than the sum of the rest 6 negative members, the mean will be positive. Insuff.
2 stm: clearly says that the sum is negative so is we divide negative number by 7 (number of members) we will definitely get negative number. Suff.
IMO
Ans: B
2 stm: clearly says that the sum is negative so is we divide negative number by 7 (number of members) we will definitely get negative number. Suff.
IMO
Ans: B
Joined: 26 Sep 2018
Posts: 14
Given Kudos: 90
GMAT 1: 650 Q47 V33
Re: Is the average (arithmetic mean) of the seven numbers negative?
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13 Aug 2019, 15:37
13 Aug 2019, 15:37
Bunuel could you please explain the logic behind the answer of the question?
