Vòng 1 - Vòng sơ loại

Question 1: \(666666^2\)

Question 2: 383 

Question 8: 36

Question 9: 28

Question 13: 2.8 x 10^-3

Question 14: 400N

Question 15: 7

Question 17: 20

Question 18: 2

Question 19: 816

Question 21: Elias

Question 23: 363

Question 24: 84

Question 26: 37

Question 28: 5

Question 29: 144

Question 30: 968