UPSC Prelims 2025·CSAT·Quantitative Aptitude·Algebra

Let x be a real number between 0 and 1. Which of the following statements is/are correct? I. x² > x³ . II. x > √(x) . Select the correct answer using the code given below:

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Last updated 23 May 2026, 3:31 pm IST
  1. AI onlyCorrect
  2. BII only
  3. CBoth I and II
  4. DNeither I nor II

Explanation

Statement I: x² > x³ Since x is a positive number (between 0 and 1), we can divide both sides by x³ without changing the inequality sign. x²/x³ > x³/x³ 1/x > 1 Given that 0 x³. So, Statement I is correct. Statement II: x > √(x) Since x is positive, we can square both sides of the inequality without changing its direction: x² > x Rearrange the inequality: x² - x > 0 Factor out x: x(x - 1) > 0 Given that 0 0. So, Statement II is incorrect. (In fact, for 0 < x < 1, x < √(x). For example, if x = 0.25, then √(x) = 0.5, and 0.25 < 0.5). Since only Statement I is correct, the answer is A. The final answer is A
Quantitative Aptitude: Let x be a real number between 0 and 1. Which of the following statements is/are correct? I. x² > x³ . II. x > √(x) . Se

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