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moneyman: Master | Next Rank: 500 Posts; Posts: 468; Joined: Sat Mar 03, 2007 10:17 pm; Thanked: 5 times

by moneyman » Sun Jan 20, 2008 4:20 am

For which of the foll values of x is sq.rt[1-sq.rt(2-sq.rtx)] NOT defined as a real number?

1
2
3
4
5

Thanks

Maxx

Source: Beat The GMAT — Problem Solving | Sun Jan 20, 2008 4:20 am

sankruth: Master | Next Rank: 500 Posts; Posts: 195; Joined: Sun Oct 21, 2007 4:33 am; Thanked: 10 times

by sankruth » Sun Jan 20, 2008 4:31 am

5

because sqrt(2-sqrt(5)) is not a real number

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