GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
fraction problem
[#permalink]
15 May 2018, 15:48
15 May 2018, 15:48
Expert Reply
00:00
Question Stats:
100% (02:24) correct
0% (00:00) wrong based on 12 sessions
Hide Show timer Statistics
\((\frac{1}{2})^3+(\frac{2}{3})^2+(\frac{1}{6})^1\)
A. \(\frac{1}{6}\)
B. \(\frac{1}{18}\)
C. \(\frac{5}{36}\)
D. \(\frac{53}{72}\)
E. \(\frac{8}{3}\)
A. \(\frac{1}{6}\)
B. \(\frac{1}{18}\)
C. \(\frac{5}{36}\)
D. \(\frac{53}{72}\)
E. \(\frac{8}{3}\)
Re: fraction problem
[#permalink]
26 May 2018, 00:28
26 May 2018, 00:28
1
Expert Reply
this is one of those questions on the GRE whose sole purpose is to waste time.
Now this is a very basic arithmatic problem
\((\frac{1}{2})^3 + (\frac{2}{3})^2 + \frac{1}{6}\)
\(\frac{1}{8} + \frac{4}{9} + \frac{1}{6}\)
\(\frac{9}{72} + \frac{32}{72} + \frac{12}{72}\)=\(53/72\)
Now this takes valueable seconds. If you are well versed with numbers start replacing fractions with approx values in decimals
\(\frac{1}{8} + \frac{4}{9} + \frac{1}{6}\)
\(\frac{1}{8}=0.125\)
\(\frac{4}{9} \approx 0.5\)
\(\frac{1}{6} \approx 0.15\)
Henc the total value must be greater than 0.5.
Opton D is only one that fits.
Now this is a very basic arithmatic problem
\((\frac{1}{2})^3 + (\frac{2}{3})^2 + \frac{1}{6}\)
\(\frac{1}{8} + \frac{4}{9} + \frac{1}{6}\)
\(\frac{9}{72} + \frac{32}{72} + \frac{12}{72}\)=\(53/72\)
Now this takes valueable seconds. If you are well versed with numbers start replacing fractions with approx values in decimals
\(\frac{1}{8} + \frac{4}{9} + \frac{1}{6}\)
\(\frac{1}{8}=0.125\)
\(\frac{4}{9} \approx 0.5\)
\(\frac{1}{6} \approx 0.15\)
Henc the total value must be greater than 0.5.
Opton D is only one that fits.
