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When the expression (3^1)(3^2)(3^3) ... (3^100)  is written as an integer, what is the product of the tens digit and the ones digit?

 Oct 14, 2020
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productfor(n, 1, 100, 3^n) =.........0337670249 - These are the last 10 digits.

 

Product =4 x 9 = 36

 
 Oct 14, 2020

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