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Math Expert V
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Posts: 58396
What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?  [#permalink]

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Difficulty:   5% (low)

Question Stats: 86% (00:32) correct 14% (00:46) wrong based on 43 sessions

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What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?

A. n + 1

B. n + 3/2

C. n + 2

D. n + 5/2

E. n + 6

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Re: What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?  [#permalink]

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1
$$\frac{n + n + 1 + 2 + n + 3}{3}$$

$$\frac{3n + 6}{3}$$

n + 2

OPTION: C
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Re: What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?  [#permalink]

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1
Bunuel wrote:
What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?

A. n + 1

B. n + 3/2

C. n + 2

D. n + 5/2

E. n + 6

n + n+3+n+3 /3

solve
n+2
IMO C

Bunuel
IMO correct answer should be option c not b ;
Math Expert V
Joined: 02 Sep 2009
Posts: 58396
Re: What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?  [#permalink]

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Archit3110 wrote:
Bunuel wrote:
What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?

A. n + 1

B. n + 3/2

C. n + 2

D. n + 5/2

E. n + 6

n + n+3+n+3 /3

solve
n+2
IMO C

Bunuel
IMO correct answer should be option c not b ;

Yes. Edited. Thank you.
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Re: What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?  [#permalink]

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Bunuel wrote:
What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?

A. n + 1

B. n + 3/2

C. n + 2

D. n + 5/2

E. n + 6

We can create the following expression for the average of the three quantities:

(n + n + 1 + 2 + n + 3)/3

(3n + 6)/3 = n + 2

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If you find one of my posts helpful, please take a moment to click on the "Kudos" button. Re: What is the average (arithmetic mean) of n, n + 1 + 2, and n + 3?   [#permalink] 21 Jan 2019, 18:41
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