10, 11, 12, 13, 14, 15, 16, 17, 20, 22, 24, ___ , 100, 121, 10000
What's the missing number in this sequence?
31
I think I've seen this before
I'm intentionally leaving off the explanation so as to not totally spoil it for those who have never seen this one.
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Posted by Larry
on 2004-08-05 14:36:34 |