In one and a half hours, the minute hand of a clock rotates through an angle of
 

  • A 90°
  • B 180°
  • C 640°
  • D 450°
  • E 540°

The correct answer is E. 540°

In one hour, the minute hand of a clock rotates through an angle of 360 degrees, as it completes one full rotation. 

In one and a half hours, the minute hand rotates through an angle of 360 * 1.5 = 540 degrees.

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