(1-1/2)乘以(1-1/3)乘以(1-1/4)乘以(1-1/5)乘以(1-1/6)乘以(1-1/7)的计算过程
=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乘以4乘以5乘以.100积有几个零
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.
请你计算1乘以2乘以3乘以.乘以1991的乘积末端有几个零?
2乘以1+4乘以3+6乘以5直接加到50乘以49
1000乘以999乘以998乘以997...3乘以2乘以乘以1的末尾连续有多少个零?
1乘以2+2乘以3+3乘以4+4乘以5……+97乘以98+98乘以99+99乘以100等于多少
1乘以2乘以3分之1+2乘以3乘以4分之1+3乘以4乘以5分之1+4乘以5乘以6分之1+········+48乘以49乘
计算2007乘以2008乘以2009乘以2010+1
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?
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?
1乘以2乘以3乘以4.乘以99的积的末尾有几个零?