List of top Quantitative Aptitude Questions on Linear Equations in One Variable

For real \(x\), the maximum possible value of \(\frac{x}{\sqrt{1+x^4}}\) is
If (5.55) x (0.555)y = 1000, then the value of 1/x - 1/y is
The number of solutions to the equation | x | (6x² + 1) = 5x² is