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# If a and b are two consecutive integers, then which is

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Director
Joined: 23 Apr 2010
Posts: 573

Kudos [?]: 94 [0], given: 7

If a and b are two consecutive integers, then which is [#permalink]

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11 Oct 2011, 02:52
00:00

Difficulty:

35% (medium)

Question Stats:

78% (00:27) correct 22% (00:05) wrong based on 18 sessions

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If a and b are two consecutive integers, then which is smaller.

(1) ab = 6
(2) $$3^a > 1$$
[Reveal] Spoiler: OA

Last edited by nonameee on 12 Oct 2011, 03:31, edited 1 time in total.

Kudos [?]: 94 [0], given: 7

Director
Joined: 23 Apr 2010
Posts: 573

Kudos [?]: 94 [1], given: 7

Re: Consecutive integers: find a smaller number [#permalink]

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11 Oct 2011, 02:55
1
KUDOS
My solution:

(1) ab = 6

a = 3 b = 2 ab = 6
a = 2 b = 3 ab = 6
a = -3 b = -2 ab = 6
a = -2 b = -3 ab = 6

insufficient

(2) $$3^a > 1$$

=> a > 0

not useful

(1) + (2)

a = 3 b = 2 ab = 6
a = 2 b = 3 ab = 6

insufficient

E

Kudos [?]: 94 [1], given: 7

Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 7670

Kudos [?]: 17326 [0], given: 232

Location: Pune, India
Re: Consecutive integers: find a smaller number [#permalink]

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12 Oct 2011, 03:18
nonameee wrote:
My solution:

(1) ab = 6

a = 3 b = 2 ab = 6
a = 2 b = 3 ab = 6
a = -3 b = -2 ab = 6
a = -2 b = -3 ab = 6

insufficient

(2) $$3^a > 1$$

=> a > 0

not useful

(1) + (2)

a = 3 b = 2 ab = 6
a = 2 b = 3 ab = 6

insufficient

E

You are right. The answer should be (E).
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Kudos [?]: 17326 [0], given: 232

Director
Joined: 23 Apr 2010
Posts: 573

Kudos [?]: 94 [0], given: 7

Re: Consecutive integers: find a smaller number [#permalink]

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12 Oct 2011, 03:31
OK. thanks everyone. I will edit the the OA.

Kudos [?]: 94 [0], given: 7

Manager
Status: Next engagement on Nov-19-2011
Joined: 12 Jan 2011
Posts: 79

Kudos [?]: 28 [0], given: 5

Location: New Delhi, India
Schools: IIM, ISB, & XLRI
WE 1: B.Tech (Information Technology)
Re: Consecutive integers: find a smaller number [#permalink]

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12 Oct 2011, 08:56
For a moment I thought to revisit my notes. Luckily its E :D
_________________

Preparation for final battel:
GMAT PREP-1 750 Q50 V41 - Oct 16 2011
GMAT PREP-2 710 Q50 V36 - Oct 22 2011 ==> Scored 50 in Quant second time in a row
MGMAT---- -1 560 Q28 V39 - Oct 29 2011 ==> Left Quant half done and continued with Verbal. Happy to see Q39

My ongoing plan: http://gmatclub.com/forum/550-to-630-need-more-to-achieve-my-dream-121613.html#p989311

Appreciate by kudos !!

Kudos [?]: 28 [0], given: 5

Director
Joined: 01 Feb 2011
Posts: 726

Kudos [?]: 143 [0], given: 42

Re: Consecutive integers: find a smaller number [#permalink]

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12 Oct 2011, 21:36
1. Not sufficient

ab=6

a---b

3---2 a>b
2----3 b>a

2. Not sufficient

3^a >1

=>a>0 and can be 1 , 2,3.....

together, Not sufficient

a>0 and ab=6

a=1,b=6 b>a

a=3,b=2, a>b

Kudos [?]: 143 [0], given: 42

Re: Consecutive integers: find a smaller number   [#permalink] 12 Oct 2011, 21:36
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