perplexus.info :: Numbers : A Pattern of Numbers

A Pattern of Numbers (Posted on 2004-12-16)

The number pattern below is based on a rule. Each number is somehow related to some numbers next to it. For instance, 25 and 9 could have used subtraction to come up with 16. The same simple rule is used for the entire pattern. Find the rule and solve for x.

  63   9  38  33  32  12  
88  25  16  18  15   x   5

Submitted by Erik O.

Rating: 4.0000 (1 votes)

Solution: (Hide)

At first glance you would think the rule is subtraction and x = 17, but this is not right because 18 is not the difference of 38 and 16. Instead, the rule is that two numbers combine to give a number that is the sum of their digits. Therefore, x = 11.

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

Subject	Author	Date
Puzzle Solution	K Sengupta	2008-07-10 15:43:53
Answer	K Sengupta	2008-07-09 15:20:09
More than one solution is possible (spoiler)	Dej Mar	2007-10-18 02:16:24
solution....	kay	2005-01-15 02:37:47
re(2): (Partial) Solution + spoiler	Avin	2004-12-17 14:06:49
re: (Partial) Solution + spoiler	Eric	2004-12-16 23:32:07
(Partial) Solution + spoiler	Hugo	2004-12-16 22:44:02
some (apparently incorrect) thoughts	Joe Ruby	2004-12-16 21:29:02

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