=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!
101乘以99乘以9999
1乘以2乘以3乘以4.乘以99的积的末尾有几个零?
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+……+98乘以99乘以100分之1
56分之53乘以57 2分之1乘以3分之2乘以4分之3乘以.乘以100分之99乘以101分之100
99乘以99-98乘以98
99乘以98减98乘以97加96乘以95减95乘以94加.加6乘以5减5乘以4加3乘以2减2乘以1等于多少
2/1乘以3/2乘以.....乘以98/99乘以99/100的答案
(1-1/4)乘以(1-1/9)乘以(1-1/16)乘以...乘以(1-99/100)
1乘以2分之1+2乘以3分之1+.+99乘以100分之1
1乘以2分之1加上2乘以3加到99乘以一百怎样做?