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Climbing the stairs (Posted on 2002-09-05) Difficulty: 3 of 5
A stairway has 100 steps. You can climb it by one step at a time, or by two steps. How many different ways to ascend this stairway exist?

See The Solution Submitted by levik    
Rating: 3.3333 (12 votes)

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Answer | Comment 23 of 24 |
The required number of different ways to ascend the stairway is 5,731,478,440,138,170,84,101
  Posted by K Sengupta on 2008-07-25 12:25:49
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