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May 3rd, 2017, 12:36 PM  #1 
Member Joined: Aug 2014 From: Mars Posts: 91 Thanks: 9  Fractions 64(2/3)`
I had to do an accuplacer recently and a few questions stood out that I didn't understand. This was one of them. 64 $\displaystyle \frac{2}{3}$ and the options were 2,4, 8, 16, 32. What math is this? It's not a standard fraction. Last edited by skipjack; May 3rd, 2017 at 02:25 PM. 
May 3rd, 2017, 12:37 PM  #2 
Senior Member Joined: Aug 2012 Posts: 1,514 Thanks: 364 
If you read that as $64^{\frac{2}{3}}$ the answer is $16$.

May 3rd, 2017, 12:38 PM  #3 
Member Joined: Aug 2014 From: Mars Posts: 91 Thanks: 9 
Why? And yes that is the equation. $64^{\frac{2}{3}}$
Last edited by Opposite; May 3rd, 2017 at 12:43 PM. 
May 3rd, 2017, 12:51 PM  #4 
Member Joined: Aug 2014 From: Mars Posts: 91 Thanks: 9 
Actually, I got it. The 3 is the index, like finding the square root, but with a 3. Then the two squares that number. Thank you.


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