GRE - Quantitative Reasoning - Inequalities
x+(1/x)=2 x^2-2x+1=0 (x-1)(x-1)=0 x=1 X=1; therefore 1*64 + 1*121 =64+121=185 or I’m not sure what the question means. In the expression x64 + x121, are the numbers supposed to be exponents? If so, we could evaluate easily: 1^64 + 1^121 = 1+1 = 2.
If 0 < y < x, then which of the following is a possible value of
A) I only
B) II only
C) III only
D) I and II only
E) II and III only
r, s, and t are three consecutive odd integers such that r < s < t.
Quantity A : r s 1
Quantity B : s t − 1
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
If x<0, which of the following represents a positive number?
Given x < 0
=> |x| > 0
A) x/|x| = negative / positive = negative
B) |x| / x = positive / negative = negative
C) x|x| = negative * positive = negative
D) -x|x| = - negative* positive = -negative = positive ........... Correct
Option D is correct