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What is the sum of the possible units digits of a perfect square written in base 6?

 Oct 29, 2021
 #1
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just look at the last digit squared.

0^0=0

1^2=1

2^2=4

3^2=9 no that is not possible 9=6+3 so 3

4^2=16   16=2*6+4  so 4

5^2=

 

I will leave the last one to you to do.

 Oct 31, 2021

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