perplexus.info :: Just Math : Fortieth logs

Fortieth logs (Posted on 2011-05-31)

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)

Comments: ( Back to comment list | You must be logged in to post comments.)

Closer number

| Comment 8 of 15 |

(In reply to re: Who is right for 7? by JayDeeKay)

Actually, 34/40 is closer to log(7) than 33/40.

Posted by Math Man on 2011-06-01 19:01:51

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