Find the sum of all 4 digit numbers formed using digits 1,2,5,6.
Options
A) 93324 B) 92324 C) 93424 D) 93424 E) 93824
(n-1)! * (111...n) *(sum of the digits)   =(4-1)!*1111*(1+2+5+6)   =93324   93324NSWER:93324
<result>A</result>
Find the sum of all 4 digit numbers formed using digits 1,2,5,6.