1,4,3,6,5,(8 ),(7 )
规律为加三减一1 + 3 = 44 - 1 =33 + 3 = 66 - 1 =55 + 3 =88 - 1 =7所以应该填8,7
规律为1,1+3=4,4-1=3,3+3=6,6-1=5,(5+3=8)(8-1=7)所以填8,7.
1到3加2,4到6加2,3到5加2,6加2得8,5加2得7,应该填8,7
1,4,3,6,5,2,1