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What is the sum of the digits in 2^2999*5^3002?

 Aug 11, 2020
 #1
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If you can prove that is actually an assignment given by your math teacher, then we can possibly help you! But, I have a sneaking suspicion that it is a problem that you made up for "fun" to see how big a number is it !! It is a very big number made up of about 3002 digits long that have to added up!! Did you try it? Good luck!

 Aug 11, 2020
 #2
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Well, it is NOT that bad!! It turns out that when you multiply them together, the number begins with:

 

125 + about 3000 zeros =1 + 2 + 5 = 8 - That is all there is to it !!.

 Aug 11, 2020

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