Question 390864

A citizen can vote for mayor in 4 ways..( any one of 3 candidates or no one )
 
similarly,  for city councilwoman .........5 ways.

           for district attorney........... 4 ways.


total ways = 4*5*4 = 80 

but, here there is one way when he didn't vote for any position..

so, subtract 1 from total 80.


total no. of ways =79