Difference between revisions of "2000 AMC 10 Problems/Problem 12"
(New page: We have a recursion: <math>A_n=A_{n-1}+4(n-1)</math>. I.E. we add increasing multiples of <math>4</math> each time we go up a figure. So, to go from Figure 0 to 100, we add <math>4 \cd...) |
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Revision as of 17:47, 7 January 2009
We have a recursion:
.
I.E. we add increasing multiples of 
each time we go up a figure.
So, to go from Figure 0 to 100, we add
.
B.
