999...9×999...9+1999...9的末尾有多少个0...是1997个9
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999...9×999...9+1999...9的末尾有多少个0...是1997个9999...9×999...9+1999...9的末尾有多少个0...是1997个9999...9×999...9+
999...9×999...9+1999...9的末尾有多少个0...是1997个9
999...9×999...9+1999...9的末尾有多少个0
...是1997个9
999...9×999...9+1999...9的末尾有多少个0...是1997个9
999...(1997个9)9×999...(1997个9)9+1999...(1997个9)9
=999...(1997个9)9×[999...(1997个9)9+1]
=999...(1997个9)9×[100...(1997个0)0]
因此,末尾有1997个0
化简999...9*999...9+1999...9
求这算式的解法:999...9(2000个9)乘999...96(1999个9)=
999.
19+199+1999+...+1 999...99(2003个9)的和是多少?是计算
999...9×999...9+1999...9的末尾有多少个0...是1997个9
999...9(1998个9)*999...9(1998个9)+1999...9(1998个9)=?简便计算
计算:999...9(n个9)*999...9(n个9)+1999...9(n个9)
999...9×999...9+1999...9的末尾有多少个0第一个999...9有200个9,第二个999...9也有200个9,第三个1999...9不看1,也有200个9
999...98(1997个9)*999...98(1997个9)+999...98(1997个9)*2的末尾有多少个0
化简999...999(2008个9)*999...999(2008个9)+199...999(2008个9)
98+998+9998+...+999...98(50个9)
计算:999...99*999...99+1999...99;(9的个数是2001个)答案和算式
999...9(1997个9)*999...9(1997个9)+1999...9(1997个9)的末尾有多少个零?
999...99(有1997个9)*999...9(有1997个9)+1999...99(有1997个9)的末尾有( )0
黄金999.
999...99(2006个9)乘99...97(2005个9)
用含n的代数式表示999..9(n个9)
888...8*999...9有2007个8和2007个9,请算出答案,