In this activity, you will experience what a "group blog" is... when more than one person is given the right to post in a blog.
Wednesday, July 25, 2007
20 is the odd number that should be out of this pattern / group. You know why? It is very simple : all other numbers ( 2, 4, 8, 16 ) can be expressed as powers of 2 except 20 !
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