Saturday, January 27, 2007

"GRE ALGEBRA QUESTION OF THE DAY"

For what range of values of ‘x’ will the inequality 15x-(2/x)>1?
A) x> 0.4
B) x< (1/3)
C) -(1/3) <>(15/2)
D) -(1/3) (2/5)
E) x< -(1/3) and x>(2/5)
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4 comments:

Anonymous said...

its A....can not be E(check for x=-1)..it doesnt satisfy...

January 28, 2007 at 2:14 AM
Unknown said...

a

January 29, 2007 at 5:17 AM
Admin said...

=> 15×2-x-2>0

=>(3x+1)(5x-2)>0

therEfore roots dont lie between the two values 2/5 and -1/3….

option D) is the correct ans.

January 29, 2007 at 11:23 AM
Anonymous said...

Its A coz value of the statement at x=0.4 is 1 and therefore anyvalue greater than 0.4 will increase the value of equation.
hence the satisfactory results is reached.

January 30, 2007 at 8:00 PM

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