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What is the reflex angle between the hands of a clock at 10:25?

Difficulty: Easy

Correct Answer: 197.5°

Explanation:

Problem restatement
Find the reflex angle (> 180°) between the hands at 10:25.


Given data

  • Hour-hand angle at 10:25: 10×30 + 0.5×25 = 300 + 12.5 = 312.5°.
  • Minute-hand angle: 25×6 = 150°.

Concept/Approach
The smaller angle is the absolute difference; the reflex angle is 360° minus that.


Step-by-Step calculation
Smaller angle = |312.5 − 150| = 162.5°Reflex angle = 360° − 162.5° = 197.5°


Common pitfalls
Reporting the smaller 162.5° instead of the requested reflex angle.

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