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Path: utzoo!watmath!jsgray
From: jsgray@watmath.UUCP (Jan Gray)
Newsgroups: net.puzzle
Subject: sequence puzzle answer
Message-ID: <8457@watmath.UUCP>
Date: Fri, 27-Jul-84 08:42:40 EDT
Article-I.D.: watmath.8457
Posted: Fri Jul 27 08:42:40 1984
Date-Received: Sat, 28-Jul-84 07:06:17 EDT
Organization: U of Waterloo, Ontario
Lines: 12

The question was:
	What is x in the following sequence?

	10 11 12 13 14 15 16 17 20 22 24 31 x 121

The answer is:
	x = 100

	[ 10 (base 16) = 11 (base 15) = 12 (base 14) = 13 (base 13) ]
	[ = ... = 31 (base 5) = 100 (base 4) = 121 (base 3)	    ]

Jan Gray (jsgray@watmath.UUCP)   University of Waterloo   (519) 885-1211 x3870