3( )( )÷( )=3( )······8.
3··············
1+2++3+··········+10000=
1/3+2/3=1,但0.333···+0.666···=0.999···,为神马?额······谁能解释一下·····
3、4······
俗语和名句的填空1······,自知之明.2······,行必果.3工欲善其事,······.4临渊羡鱼,······.
32÷6=5······2 16÷3=5······1 被除数,除数,商,余数有什么变化?(用一句话表示)
1+3+3的平方+3的三次1方+···········3的N次方=啥
(1-2)×(2-3)×(3-4)×······×(19-20)=
1\(2\3)\(3\4)······\(18\19)\(19\20)=
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