1) Remove the integers which are congruent to 3 (mod 7) from the following list of five integers, and sum the integers that remain.
85 ,49,479 , -67 , 12,000,003 ,-3

2)

The units digit of a perfect square is 6. What are the possible values of the tens digit?
(Need Explanation with proof)
Correct Answer gets Brainliest!