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The first three towers in a sequence are shown. The n^th tower is formed by stacking n blocks on top of an n times n square of blocks. How many blocks are in the 99th tower?

 May 23, 2020
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The "closed form" of your sequence is: a(n) =n^2 + n

 

So, the 99th term will be: 99^2 + 99 =9,900

 
 May 23, 2020

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