可以用公式
=SMALL(IF(RIGHT(ROW($11:$49))<>"0",ROW($11:$49)),RANDBETWEEN(1,ROWS($11:$49)-3))
同时按下CTRL+SHIFT+回车,输入数组公式。
公式可以下拉。
=IF(RANDBETWEEN(1,2)=1,RANDBETWEEN(11,19),IF(RANDBETWEEN(2,3)=2,RANDBETWEEN(21,29),IF(RANDBETWEEN(3,4)=3,RANDBETWEEN(31,39),RANDBETWEEN(41,49))))