Digits

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vinay1983: Legendary Member; Posts: 643; Joined: Wed Aug 14, 2013 4:27 amFollowed by: 7 members; Thanked: 48 times

by vinay1983 » Tue Aug 27, 2013 5:07 am

The question is from OG 13. Again what is the frequency of such questions on the GMAT?

OA: B

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You can, for example never foretell what any one man will do, but you can say with precision what an average number will be up to!

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Source: Beat The GMAT — Problem Solving | Tue Aug 27, 2013 5:07 am

ganeshrkamath: Master | Next Rank: 500 Posts; Posts: 283; Joined: Sun Jun 23, 2013 11:56 pmFollowed by: 26 members; Location: Bangalore, India; Thanked: 97 times; GMAT Score:750

by ganeshrkamath » Tue Aug 27, 2013 6:24 am

vinay1983 wrote:The question is from OG 13. Again what is the frequency of such questions on the GMAT?

OA: B

Given:
1/3 of the decimals in T have a tenths digit that is even.

So 10 of the decimals in T are rounded up and 20 of the decimals in T are rounded down.
E - S = 10*(0.2 to 0.8) + 20*(-0.1 to -0.9)
Let's look at the extremes (max positive - min negative) and (min positive - max negative):
2 - 18 = -16
8 - 2 = 6

So the values lie between 6 and -16, inclusive.

Choose B

This is a tough problem.
Unless you're doing really doing well in the quant section, the frequency of occurrence of such questions will be less.

Cheers

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Kelley School of Business (Class of 2016)
GMAT Score: 750 V40 Q51 AWA 5 IR 8
https://www.beatthegmat.com/first-attemp ... tml#688494

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Java_85: Master | Next Rank: 500 Posts; Posts: 234; Joined: Tue Jul 16, 2013 9:00 am; Location: West Virginia; Thanked: 9 times

by Java_85 » Tue Aug 27, 2013 9:24 am

Nice Solution ganeshrkamath!

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[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Tue Aug 27, 2013 11:40 am

Hi vinay1983,

If you're talking about a question that is this wordy and this layered, then you're not likely to see many (you probably won't see anything like this particular prompt on Test Day).

However, this is also a Roman Numeral question, which you probably will see 1 of in the Quant section (there are also some rare Reading Comp questions that involve Roman Numerals). These types of questions are designed to take longer than average to solve, so don't be surprised if you need to spend 2-3 minutes to solve these prompts.

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

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