1. If the hour hand of a clock starts pointing at 12 o'clock and rotates 90 degrees clockwise, at which hour number will it now be pointing?
- A3
- B4
- C5
- D7
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Answer: A
Each hour mark on a clock represents 30 degrees (360/12). Rotating 90 degrees clockwise moves the hand forward by 90/30 = 3 hour marks from 12, landing on hour 3.