The units digit of a perfect square is 6. What are the possible values of the tens digit? I know the answer is 1,3,5,7,9 but I need to be able to prove it
If the units digit of a perfect square is 6 then it will always be odd.
You can provide many examples
16
36
196 256
576
676
1156
1296
Yay!
Tens digit, sorry, my mistake
