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What is the value of N?

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Joined: 10 Feb 2011
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What is the value of N? [#permalink]

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New post 15 Mar 2011, 16:48
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

58% (00:24) correct 42% (00:25) wrong based on 96 sessions

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What is the value of N?

(1) N is a mode of [3, 0, 1, - 1, 0, 5, 1]
(2) N is neither positive nor negative
[Reveal] Spoiler: OA

Last edited by banksy on 16 Mar 2011, 09:03, edited 1 time in total.

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Re: What is the value of N? [#permalink]

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New post 15 Mar 2011, 18:39
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banksy wrote:
10. (GC) What is the value of N?
(1) N is a mode of [3, 0, 1, - 1, 0, 5, 1]
(2) N is neither positive nor negative


P.s: what does "mode" means?

The value that appears most within a set of numbers.
For example, the mode of the set consisting of the numbers 2, 4, 3, 2, 8, 2 is 2 since the number two appears the most (i.e., three times).

(1) 0 and 1 appears twice in [3, 0, 1, - 1, 0, 5, 1] so it has two modes 0 and 1 .thus insufficient
(2) if no is neither positive nor negative .Its definitely 0. Thus sufficient

OA should be B

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Re: What is the value of N? [#permalink]

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New post 15 Mar 2011, 20:09
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Mode of a set is the number that appears most frequently.

From (1), N = 1 or 0, so not sufficient.

From (2), N = 0, so sufficient as 0 is niether -ve nor +ve.

Hence the answer is B.
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Re: What is the value of N? [#permalink]

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New post 25 Oct 2015, 05:01
DS questions are really amazing. i was wondering why answer is B as i got C as the answer. and later realized that statement B is enough.

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Re: What is the value of N? [#permalink]

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New post 24 Dec 2015, 12:02
Statement 1 has both 0 and 1 occurring twice. Inufficient

Statement 2

Firstly, forget that you have read statement 1. Now, analysing statement 2, N is neither positive or negative. In the entire universe that is not governed by Christopher Nolan's Interstellar physics, there is only one number that is neither negative nor positive i.e. 0.

Hence, statement 2 alone is sufficient.

B
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Re: What is the value of N?   [#permalink] 24 Dec 2015, 12:02
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