GMAT Prep: Median

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preciousrain7: Senior | Next Rank: 100 Posts; Posts: 78; Joined: Thu Dec 06, 2007 4:16 pm; Location: NYC, NY; Thanked: 2 times

by preciousrain7 » Thu Dec 27, 2007 2:56 pm

I keep on getting the same answer (Ans choice C). What am I missing here? Thanks for the help!

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Source: Beat The GMAT — Problem Solving | Thu Dec 27, 2007 2:56 pm

StarDust845: Master | Next Rank: 500 Posts; Posts: 158; Joined: Mon Dec 03, 2007 8:32 am; Thanked: 7 times

by StarDust845 » Thu Dec 27, 2007 3:06 pm

0<x<1

For given x, sqrt(x) is greater than x.
square(x) is less than x.
cube(x) will be less than square(x)
1/x will be greater than x. If you arrange them in order you see that x will be in the middle and hence the median.

Calista.

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preciousrain7: Senior | Next Rank: 100 Posts; Posts: 78; Joined: Thu Dec 06, 2007 4:16 pm; Location: NYC, NY; Thanked: 2 times

by preciousrain7 » Thu Dec 27, 2007 3:28 pm

StarDust845 wrote:0<x<1

For given x, sqrt(x) is greater than x.
square(x) is less than x.
cube(x) will be less than square(x)
1/x will be greater than x. If you arrange them in order you see that x will be in the middle and hence the median.

Calista.

Thanks! All this time I was thinking sqrt (x) is less than x.

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