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When 2020 * 2022 is written in base 2021, what is the sum of the digits?

 Dec 30, 2019
 #1
avatar+111321 
+1

(2020) ( 2022)  =

 

(2021 - 1) ( 2021  + 1)  =

 

(2021)^2   -  1

 

Note  that   ( base  m )^2     =    100m 

 

The sum of the digits  =   0

 

 

cool cool cool

 Dec 31, 2019

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