[net.puzzle] sequence puzzle answer

jsgray@watmath.UUCP (Jan Gray) (07/27/84)

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