答:
( 8 )-( 7 )=1
( 4 )-( 2 )=2
( 6 )-( 3 )=3
( 5 )-( 1 )=4
至少有2种情况
( 7)-(6 )=1
(3)-(1 )=2
( 5)-( 2)=3
( 8)-(4 )=4
( 7)-(6 )=1
(3 )-(1 )=2
( 5)-( 2)=3
( 8)-(4 )=4
( 2)-(1 )=1
(7 )-(5)=2
(6)-(3)=3
(8 )-( 4)=4
2-1=1
7-5=2
6-3=3
8-4=4
答题不易……
如果满意望采纳!!
( 2)-(1 )=1
(7)-(5 )=2
(6)-( 3)=3
( 8)-(4 )=4
8-4=4.6-3=3 7-5=2 2-1=1