A,20=4乘以5.B,20=2乘以2乘以5.C,20=1乘以2乘以2乘以5.应该选哪一项,为什么?
A,20=4乘以5.B,20=2乘以2乘以5.C,20=1乘以2乘以2乘以5.应该选哪一项,为什么?
27046=2乘以( )+7乘以( )+4乘以( )+6乘以( )
=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3分之2乘以4分之3乘以5分之4乘以.乘以20分之19等于多少?
A=B乘以57 A乘以2等于B乘以( )A乘以5等于B乘以( )A乘以()等于B乘以12 A乘以()等于B乘以29
设A=1998乘以1999除以2000乘以2001,B=1998乘以2000除以1999乘以2001,c=1998乘以2
1乘以2乘以3乘以4乘以5乘以.100积有几个零
1乘以3分之2乘以2+3乘以5分之4乘以4+5乘以7分之6乘以6+.+19乘以21分之20乘以20等于?
100乘以(-2)乘以(-8)乘以0.01
20乘以20减19乘以19加18乘以18减17乘以17加...加2乘以2减1乘以1的结果
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=11²
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.