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Previous Year Question (PYQs)

A cat climbs a 21- meter pole. In the first minute it climbs 3 meter and in the second minute it descends one meter. In how minutes the cat would reach the top of the pole?




Solution

  • Every 2 minutes, net climb = 3 - 1 = 2 meters
  • In 20 minutes, the cat climbs 10 × 2 = 20 meters
  • At the start of the 21st minute, the cat climbs 3 meters and reaches the top (21 meters) before it can slip.


    • ✅ Final Answer:
    The cat will reach the top in 21 minutes.


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