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Proper sequence (Posted on 2005-10-05) Difficulty: 2 of 5
Can you devise the next few numbers?
Hints:
all elements are 2 digit integers
no element appears more than once
the total number of elements is exactly 27

19,18,17,16,15,29,14,27,13,38,25,37,49,12,59,...

See The Solution Submitted by Larry    
Rating: 2.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Proper explanation, spoiler. | Comment 16 of 18 |

I think VB is Visual Basic but no, I can't program, anyway here's how I got it,

Usually I find sequences tricky and someone else gets in there first but seeing as it was my pal Larry's prob I made some extra effort.

The main hint that gave it away is in the title. A proper fraction is one such that p/q<1. (as opposed to improper fractions such as 3/2 whose magnitude is greater than 1). Larry confirmed in his posts that a slash was involved and this reassured me that it was to do with fractions. Eventually I hit on simply putting a slash in the middle of each of the two digit numbers to create fractions. It was then a simple matter of devising a list in ascending order, of all such fractions.

Nicely crafted problem, cheers Larry.

(Hugo- thanks)(Brianjn- what were u on about?)(goeshg- err?)


  Posted by Percy on 2005-10-06 19:56:57
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