Question 110

If $$\frac{x^{3}}{z^{2}}<\frac{x^{3}+y^{3}+z^{3}}{x^{2}+y^{2}+z^{2}} < \frac{z^{3}}{x^{3}};x, y, z$$ are positive real numbers, then which of the following options always ensure the given inequality to be true?

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