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# M61-20

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Math Revolution GMAT Instructor
Joined: 16 Aug 2015
Posts: 7612
GMAT 1: 760 Q51 V42
GPA: 3.82

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18 Jun 2018, 05:16
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Difficulty:

25% (medium)

Question Stats:

82% (01:00) correct 18% (00:00) wrong based on 11 sessions

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What is the range of 29 consecutive even numbers?

A. 56
B. 58
C. 60
D. 62
E. 64

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MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
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"Only $79 for 1 month Online Course" "Free Resources-30 day online access & Diagnostic Test" "Unlimited Access to over 120 free video lessons - try it yourself" Math Revolution GMAT Instructor Joined: 16 Aug 2015 Posts: 7612 GMAT 1: 760 Q51 V42 GPA: 3.82 Re M61-20 [#permalink] ### Show Tags 18 Jun 2018, 05:16 Official Solution: What is the range of 29 consecutive even numbers? A. 56 B. 58 C. 60 D. 62 E. 64 The number of consecutive even integers is $$\frac{the \ last \ term(L) – the \ first \ term(F)}{2} + 1$$ and its range is $$L-F$$. Now, $$\frac{Range}{2} + 1 = \frac{(L-F)}{2} + 1 = 29$$. So, $$\frac{Range}{2} = 28$$, and, hence, $$Range = 56$$. Answer: A _________________ MathRevolution: Finish GMAT Quant Section with 10 minutes to spare The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy. "Only$79 for 1 month Online Course"
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Joined: 02 Aug 2009
Posts: 7764

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18 Jun 2018, 05:25
Bunuel wrote:
What is the range of 29 consecutive even numbers?

A. 56
B. 58
C. 60
D. 62
E. 64

Another way....

How many gaps are there in 29 consecutive even integers -28
As there is 1 gap in two numbers ...x_y
Two gaps in 3 numbers x_y_z
So 28 gaps in 29 numbers and each gap is 2 units..
So total 28*2=56

A
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Joined: 01 May 2017
Posts: 82
Location: India

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28 Dec 2018, 02:19
Let's consider the first 29 even numbers,

2,4,6......

2(1,2,....29)

First even number = 2
Last even number of the 29 numbers = 2*29
= 58

Range = Max - Min
= 58 - 2
= 56

So, Option A is correct
Re: M61-20   [#permalink] 28 Dec 2018, 02:19
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# M61-20

Moderators: chetan2u, Bunuel