perplexus.info :: Numbers : Move the 2

Move the 2 - double the number (Posted on 2002-04-19)

A certain number ends with the digit 2. Moving the 2 from the end of the number to its front doubles it. Can you find this number?

(Hint: it's quite large)

See The Solution Submitted by levik

Rating: 4.1111 (9 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
The number	Math Man	2015-11-08 19:30:18
re: The continued fraction way	TheKPAXian	2009-10-06 19:48:57
answer	K Sengupta	2007-06-28 23:03:30
Infinitely many	Michael Cottle	2004-12-31 23:13:01
The continued fraction way	Federico Kereki	2003-12-04 09:49:37
Another method	DJ	2003-06-25 16:07:43
another method	Charlie	2003-06-04 04:01:16
another approach	steve	2003-05-22 03:09:30
My Answer	Tom	2002-05-09 12:15:01
Typo in your solution	FingLao	2002-05-09 09:43:32

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