. Viết tiếp 2 số hạng vào dãy số sau
10,13,18,26,....,... 0,1.2.4,7,12,....,..... 0,1,4,9,18,....,..... 5,6,8,10,.....,....
1,6,54,648,....,.... 1,5,14,33,72,....,.... 2,20,56,110,182,....,.... 1,3,3,9,27,...,....
1,2,3,6,12,24,.....,..... 1,4,9,16,25,36,...,.... 2,12,30,56,90,...,.... 1,3,9,27,...,....
2,6,12,20,30,...,.... 6,24,60,120,210,...,,.....
co ai choi lien quan ko
moi biet duoc 1cau la cau 1,2,3,6,12,24,48,56