2、11
1.(1+ 1/3+ 1/5+ 1/10+ 1/15+ 1/30)+( 1/2+ 1/4+ 1/6+ 1/12+ 1/2
1个回答
相关问题
-
2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1
-
1+1/2-1=1/2 1/3+1/4-1/2=1/12.1/5+1/6-1/3=1/30.
-
1 1 -1 1 -2 1 1 -3 3 -1 1 -4 6 -4 1 1 -5 10 x 5 -1 1 -6 15 -
-
1/2+1/3+1/4+1/5+1/6+1/12+1/30 简便运算
-
2011常德,1/2+1/2-1=1/2,1/3+1/4-1/2=1/12,1/5+1/6-1/3=1/30… 则1/2
-
已知1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4.计算1/2+1/6+1/12+1/201/30
-
1-2 5/12-1 1/4-3 13/15+2 1/5+1 3/15
-
★1,2,10,30,68,.(1)1,2,10,30,68,.(2)1,2,9,,625 (3)1,1,2,6,,12
-
找规律添数1加1/2-1=1/2,1/3+1/4-1/2=1/12,1/5+1/6-1/3=1/30
-
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+```+1/29*30