1. Which variable names are legal, which are not? (5 pts) 1.1) 3abc 1.2) _myABC 1.3) _1_2_3_a_b_c 1.4) ABC 1.5) x@y 2. Calculations (5 pts): 2.1) 100 % 30 * 2 2.2) 25-8/10 2.3) 8*2%3 2.4) 13 % 15 2.5) 22% 11 3. Which Java code is correct? Which is not? Explain the reason if it is not correct. (6 pts) 3.1) int 3.2) 3.3) double char int 3 W = 1; double pi= pi * 2; X; Y; X; W; pi; 4. How do I check an integer variable, x, is greater than 5 but less than 20? Please write down your Java expression (2 pts). 5. Please fill out the table (result should be either true or false) (5 pts) Result 6.2) 6. What will be the output of each code part below? (each code part is independent) (4 pts) 6.1) ! (99 > 100) (1> 0) && (2> 3) && (102 20) // (6 != 2) int if (A % 2 == 0) { A = A/2; } else { } Expression (20