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Updated on: 07 Jul 2019, 01:29
Originally posted by Bunuel on 20 May 2017, 06:00.
Last edited by Sajjad1994 on 07 Jul 2019, 01:29, edited 1 time in total.
Last edited by Sajjad1994 on 07 Jul 2019, 01:29, edited 1 time in total.
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If S denotes the sum and A the average of the consecutive positive integers 1 through n, then which of the following must be true?
I. A = S/n
II. S = A/n
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
I. A = S/n
II. S = A/n
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
Source: Nova GMAT
Difficulty Level: 500
Difficulty Level: 500
BillyZ
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20 May 2017, 06:04
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Bunuel
If S denotes the sum and A the average of the consecutive positive integers 1 through n, then which of the following must be true?
I. \(A = \frac{S}{n}\)
II. \(S = \frac{A}{n}\)
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
I. \(A = \frac{S}{n}\)
II. \(S = \frac{A}{n}\)
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
\(Average = \frac{Sum}{{#}}\)
Given: S=Sum, A=Average, #=n
\(A=\frac{S}{n}\)
Answer: A
20 May 2017, 06:06
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Bunuel
If S denotes the sum and A the average of the consecutive positive integers 1 through n, then which of the following must be true?
I. A = S/n
II. S = A/n
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
I. A = S/n
II. S = A/n
III. A – S = n
(A) I only
(B) II only
(C) III only
(D) I and II only
(E) I, II, and III
Average, A = Sum of consecutive numbers/number of consecutive numbers
A= S/n
Answer A - I
