Baten80 wrote:

Quantitative review 2nd edition : DS 76.

Is x between 0 and 1?

(1) x^2 is less than x.

(2) x^3 is positive

Is x between 0 and 1? ---> is x a + fraction

(1) x^2 is less than x --> means x is a fraction because when fractions are squared, they are less then their original value

now if x was a (-) fraction, it would become greater than its original because its being squared. therefore x = (+) fraction

Suff.

(2) completely meaningless. just tells you that x is a positive. don't know if its a fraction or an integer

hence (a)

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