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Fortieth logs (Posted on 2011-05-31) Difficulty: 2 of 5
It turns out that the common logarithms of each of the numbers from 2 through 9 can be very well approximated by rational numbers of the form n/40.

Derive each of the numerators with no calculation aids beyond pencil and paper.

See The Solution Submitted by Jer    
Rating: 4.5000 (2 votes)

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  Subject Author Date
Some Thoughtsre(3): Who is right for 7?....DETAILSAdy TZIDON2011-06-02 11:43:53
re(2): Who is right for 7?....DETAILSGamer2011-06-02 05:11:42
Some Thoughtsre(2): Closer number, closing remarksAdy TZIDON2011-06-02 01:59:01
Some Thoughtsre: Closer numberSteve Herman2011-06-02 00:42:38
re(2): Who is right for 7?Ady TZIDON2011-06-01 20:39:15
Hints/Tipsre: Who is right for 7?....DETAILSAdy TZIDON2011-06-01 19:23:47
SolutionAnswers from 2 to 9Math Man2011-06-01 19:05:31
Closer numberMath Man2011-06-01 19:01:51
re: Who is right for 7?JayDeeKay2011-06-01 18:41:41
Who is right for 7?Jer2011-06-01 15:08:08
Lucky 7Steve Herman2011-05-31 21:13:59
No SubjectJayDeeKay2011-05-31 17:57:15
re(2): A start (spoiler)Jer2011-05-31 17:06:27
re: A start (spoiler)Charlie2011-05-31 14:43:51
Some ThoughtsA start (spoiler)Steve Herman2011-05-31 14:12:29
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