45,25,15, 5,1/20, 1/30, 1/40
找法例,填数字:45,25,15,( -5),1/20,( 2/40),(3/60 ).
嘻嘻
0
45,25,15, 5,1/20, 1/30, 1/40
找法例,填数字:45,25,15,( -5),1/20,( 2/40),(3/60 ).
嘻嘻