Mb 6.4
(60 số)
00,01,03,05,06,08,10,12,14,15,17,19,21,23,24,26,28,29,30,32,35,37,41,42,44,46,47,49,50,51,53,55,56,58,60,62,64,65,67,69,71,73,74,76,78,79,80,82,85,87,91,92,94,96,97,99,02,20,07,70
(2 8số)
12,17,21,23,24,26,28,29,32,37,42,47,62,67,71,73,74,76,78,79,82,87,92,97,02,20,07,70
(8 số)
12,21,17,71,02,20,07,70
Bài mang tính chất tk