OG easy one

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djsir007: Junior | Next Rank: 30 Posts; Posts: 12; Joined: Sun Apr 15, 2007 2:48 pm

by djsir007 » Thu Apr 26, 2007 5:04 pm

Of the following, which is least?

a. 1/0.2
b. (0.2)^2
c. 0.02
d. 0.2/2
e. 0.2

I searched for this, but cant find it.

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Source: Beat The GMAT — Problem Solving | Thu Apr 26, 2007 5:04 pm

Neo2000: Legendary Member; Posts: 519; Joined: Sat Jan 27, 2007 7:56 am; Location: India; Thanked: 31 times

by Neo2000 » Thu Apr 26, 2007 6:46 pm

1/0.2 = 10/2 = 5

(.2)^2 = .04

.02

.2/2 = 0.1

.2

Thus you can see that 1/0.2 is the largest

As a general rule, Numerator should be Large and Denominator should be Small

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Cybermusings: Legendary Member; Posts: 559; Joined: Tue Mar 27, 2007 1:29 amFollowed by: 2 members; Thanked: 5 times

by Cybermusings » Sat Apr 28, 2007 1:44 am

Is c the answer .02 should be the least

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uniquer: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Sun May 20, 2012 5:59 am; Thanked: 1 times

by uniquer » Fri Sep 20, 2013 9:44 pm

10th OG says answer is B.
But ideally the answer should be C.

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Sat Sep 21, 2013 5:06 am

djsir007 wrote:Of the following, which is least?

a. 1/0.2
b. (0.2)^2
c. 0.02
d. 0.2/2
e. 0.2

We can write most of these in terms of 0.2

EDIT
A. 1/0.2 = greater than 1
B. (0.2)^2 = (0.2)(0.2)
C. 0.02 = (1/10)(0.2)
D. 0.2/2 = (1/2)(0.2)
E. 0.2 = (1)(0.2)

Answer = C

Cheers,
Brent

Last edited by Brent@GMATPrepNow on Sat Sep 21, 2013 12:51 pm, edited 1 time in total.

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theCodeToGMAT: Legendary Member; Posts: 1556; Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members; Thanked: 448 times; GMAT Score:650

by theCodeToGMAT » Sat Sep 21, 2013 5:36 am

[A] greater than 1
[B} Less than 1
[C] Less than 1
[D] Less than 1
[E] Less than 1

ANSWER [spoiler]{A}[/spoiler]

R A H U L

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lunarpower: GMAT Instructor; Posts: 3380; Joined: Mon Mar 03, 2008 1:20 amFollowed by: 1535 members; Thanked: 2256 times; GMAT Score:800

by lunarpower » Sat Sep 21, 2013 6:21 am

theCodeToGMAT wrote:[A] greater than 1
[B} Less than 1
[C] Less than 1
[D] Less than 1
[E] Less than 1

ANSWER [spoiler]{A}[/spoiler]

^^ Winner. Don't bother calculating these things.

If you aren't thinking in these terms, then notice what happens when you do the calculations. If you do this problem, finish it, and still don't realize immediately that (last four choices) < 1 < first choice, then there's no benefit -- the problem is a waste of time.

EDIT: You need more than just this, because the question wants the smallest value. So you must be at least as un-lazy as the following:
(A) More than 0.2
(B) Less than 0.2
(C) Less than 0.2
(D) Less than 0.2
(E) Less than 0.2

So you still need to evaluate B/C/D.

--

To the original poster: If this is an "easy one", then why did you post it? I'm confused.

Last edited by lunarpower on Sat Sep 21, 2013 7:45 am, edited 1 time in total.

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Sat Sep 21, 2013 6:36 am

Just for clarification, the question is asking for the smallest (least) value, not the greatest value.

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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lunarpower: GMAT Instructor; Posts: 3380; Joined: Mon Mar 03, 2008 1:20 amFollowed by: 1535 members; Thanked: 2256 times; GMAT Score:800

by lunarpower » Sat Sep 21, 2013 7:45 am

Thanks for the heads-up, Brent. Made some edits.

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theCodeToGMAT: Legendary Member; Posts: 1556; Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members; Thanked: 448 times; GMAT Score:650

by theCodeToGMAT » Sat Sep 21, 2013 8:47 am

Brent@GMATPrepNow wrote:Just for clarification, the question is asking for the smallest (least) value, not the greatest value.

Cheers,
Brent

Oh yes........ seems I am out of my mind today due to some crazy CR question :'(

R A H U L

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theCodeToGMAT: Legendary Member; Posts: 1556; Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members; Thanked: 448 times; GMAT Score:650

by theCodeToGMAT » Sat Sep 21, 2013 8:49 am

Brent@GMATPrepNow wrote:Just for clarification, the question is asking for the smallest (least) value, not the greatest value.

Cheers,
Brent

Oh yes........ seems I am out of my mind today due to some crazy CR question :'(

R A H U L

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wakk0: Newbie | Next Rank: 10 Posts; Posts: 3; Joined: Sat Sep 21, 2013 10:48 am

by wakk0 » Sat Sep 21, 2013 10:51 am

Hey Brent,

The answer here is C. You made a slight error. Answer choice C should be (1)(.02) which is .02. Answer choice B is (.2)(.2) = .04

Edit: I can't type answer choices correctly!

Brent@GMATPrepNow wrote:
djsir007 wrote:Of the following, which is least?

a. 1/0.2
b. (0.2)^2
c. 0.02
d. 0.2/2
e. 0.2
We can write most of these in terms of 0.2

A. 1/0.2 = greater than 1
B. (0.2)^2 = (0.2)(0.2)
C. 0.02 = (1)(0.2)
D. 0.2/2 = (1/2)(0.2)
E. 0.2 = (1/10)(0.2)

Answer = B

Cheers,
Brent

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varun289: Master | Next Rank: 500 Posts; Posts: 298; Joined: Sun Jun 03, 2012 6:42 amFollowed by: 7 members; Location: New delhi; Thanked: 10 times; GMAT Score:590

by varun289 » Sat Sep 21, 2013 12:16 pm

ans must be C

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Sat Sep 21, 2013 12:52 pm

wakk0 wrote:Hey Brent,

The answer here is C. You made a slight error. Answer choice C should be (1)(.02) which is .02. Answer choice B is (.2)(.2) = .04

Edit: I can't type answer choices correctly!

Good catch - thanks!
I edited my earlier post

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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StrawberryCow: Junior | Next Rank: 30 Posts; Posts: 20; Joined: Tue Oct 29, 2013 8:38 pmFollowed by: 2 members

by StrawberryCow » Fri Apr 11, 2014 7:34 am

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