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How Many ? (Posted on 2004-01-02) Difficulty: 3 of 5
How many positive integers 'n' are there such that [(2)^n + 1] is divisible by 7 ?

See The Solution Submitted by Ravi Raja    
Rating: 2.6667 (9 votes)

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Some Thoughts No Subject Comment 6 of 6 |
No integer satisfying the given conditions can exist.
  Posted by K Sengupta on 2008-02-07 05:14:03
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