Which of the following statements is/are correct?

Quantitative Aptitude ·Previously asked in UPSC Civil Services Examination 2025

View the full solved paper: GS Paper II

Question

Let x be a real number between 0 and 1.

Which of the following statements is/are correct?

I. x² x³.

II. x √x.

  1. A. I only (Correct answer)
  2. B. II only
  3. C. Both I and II
  4. D. Neither I nor II

Correct Answer

Option A — I only

Detailed Solution & Explanation

The correct answer is I only.

Key Points

  • For 0 < x < 1: Statement I: x² > x³?
  • Divide by x² (positive): 1 > x. True for 0<x<1. ✓ Statement II: x > √x?
  • For 0<x<1, √x > x (e.g., x=0.25: √0.25=0.5 > 0.25). So x > √x is FALSE.
  • Only Statement I is correct. Answer: I only.