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if you get 1 toothpick on day 1 and it doubles each time. how many tooth picks will u have on day 30?

 Nov 3, 2015
 #1
avatar+130536 
+5

The sum is given by:

 

1[ 1 - rn ] / [ 1 - r]      where r = 2 and n = 30....so we have

 

1 [ 1- 230] / [ 1 - 2 ]  =

 

1,073,741,823

 

 

cool cool cool

 Nov 3, 2015

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