I have math questions, please help!!!

determine the last digit of each power using patterns
-3 to the power of 16
-2 to the power of 35
-5 to the power of 19
-4 to the power of 11

1.) The pattern of the last digits (3^1, 3^2, 3^3) is 3, 9, 7, 1, 3, 9... Continuing the pattern, the 16th term would be 1.

2.) The pattern is 2, 4, 8, 6, 2, 4... The 35th term is 8.

3.) The term pattern is 5, 5, 5, 5, 5, 5... The 19th term is 5.

4.) The pattern is 4, 6, 4, 6... The 11th term is 4.