1+1+3乘以300=?2000+1500=?

=3乘以2乘以1,=4乘以3乘以2乘以1,=5乘以4乘以3乘以2乘以1,那么100!除以99! 1乘以2乘以3+2乘以3乘以4+3乘以4乘以5+...+7乘以8乘以9 5乘以5等于0乘以1乘以100+25；15乘以15等于1乘以2乘以100+25；25乘以25等于2乘以3乘以100=25;猜测地N个算式应表示为: 1+1+3乘以300=?2000+1500=? 1乘以2乘以3乘以4乘以5乘以.100积有几个零 6/7乘以( )=3/5乘以( )=9乘以（ ）=0.2乘以（ ）=1 18分之5乘以( )=( )乘以3分之16=0.1乘以()=()乘以12=1 8分之5乘以( )=( )乘以3分之2=0.1乘以( )=( )乘以12=1 18分之5乘以( )=( )乘以3分之16=0.1乘以()=()乘以12=1怎么做? 观察1乘以2乘以3乘以4+1=25=5² 2乘以3乘以4乘以5+1=121=11²3乘以4乘以5乘以6+1=361=19²（1）计算5乘以6乘以7乘以8+1的结果是多少?（2）由此你能推出一般的结论吗? (21乘以7分之3+7分之4乘以21)乘以4分之1=简算 x乘以x+1乘以x+2乘以x+3=3024怎么解? 1乘以2乘以3乘以4乘以5乘以...乘以2010的末尾有（ ）个连续的零. 一乘以二乘以三分之一加2乘以3乘以4分之一+3乘以4乘以5分之1+……+48乘以49乘以50分之1. 1/1乘以2乘以3+1/2乘以3乘以4+1/3乘以4乘以5…+1/20乘以21乘以22的最简便的计...1/1乘以2乘以3+1/2乘以3乘以4+1/3乘以4乘以5…+1/20乘以21乘以22的最简便的计算方法 1乘以2乘以3乘以4.乘以100等于多少 1乘以2乘以3乘以4乘以一直乘到100等于多少? 1乘以2乘以3乘以.乘以199的得数中共有多少个0?