Digits

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Digits

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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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.

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by Java_85 » Tue Aug 27, 2013 9:24 am
Nice Solution ganeshrkamath!

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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.

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