excel生成数字和大写字母的8位随机数
使用函数指令可以完成。
单元格=ROUNDDOWN((RAND()*99999999),0)
按F9刷新即变化随机8位数
ROUNDDOWN(number,num_digits)
Number 为向下舍入的任意实数。这个参数用的不多。
Num_digits 四舍五入后的数字的位数。这个参数用的不多。
rand()函数产生随机数的一个随机函数。
99999999这八位数的9代表单元格的随机数是8位且不大于99999999
最后一位0表示没有小数点,随机数为整数。
=CONCATENATE(LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}),LOOKUP(RANDBETWEEN(1,31),{1,"A";2,"B";3,"C";4,"D";5,"E";6,"F";7,"G";8,"H";9,"I";10,"J";11,"K";12,"L";13,"M";14,"N";15,"P";16,"Q";17,"R";18,"S";19,"T";20,"U";21,"V";22,"W";23,"X";24,"Y";25,3;26,4;27,5;28,6;29,7;30,8;31,9}))
公式有点长,而且随机变化,=(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))&(CHAR(IF(RAND()>0.5,RANDBETWEEN(48,57),RANDBETWEEN(65,90))))
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