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Number Series (Posted on 2004-02-14) Difficulty: 4 of 5
Find the next number in the following series:

11, 12, 20, 23, 33, 46, ?, ?

  Submitted by Ravi Raja    
Rating: 3.0000 (3 votes)
Solution: (Hide)
All the numbers given are the fibonacci numbers in increasing bases starting 2 !!!
Therefore,
11 = 3 base 2
12 = 5 base 3
20 = 8 base 4
23 = 13 base5 etc ...
So, the next number is 67 which is 55 base 8.
(Fibonacci series : 2, 3, 5, 8, 13, 21, 34, 55, 89..... where next number is sum of the previous to numbers.)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
No Subjectkevin2005-10-29 20:13:58
SolutionOopsLarry2004-03-03 23:35:44
SolutionSolutionLarry2004-03-03 23:19:54
re(3): No Subject ===> better, best etc att : GamerGamer2004-03-02 19:04:34
Some Thoughtsre(2): No Subject ===> better, best etc att : GamerAdy TZIDON2004-02-29 17:59:04
re: No SubjectGamer2004-02-29 14:55:32
re: No SubjectFomomo2004-02-21 14:43:30
No SubjectAdy TZIDON2004-02-18 11:27:55
linkRichard2004-02-14 23:19:40
SolutionBased on a FibHaiosu2004-02-14 17:03:18
SolutionI'm pretty sure this won't be the official solution :-)Penny2004-02-14 15:00:45
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