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.
- A. I only (Correct answer)
- B. II only
- C. Both I and II
- 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.