SOLUTION: How many different codes can be made using three different letters followed by three digits where the second digit cannot be 8 or 2?
Algebra ->
Permutations
-> SOLUTION: How many different codes can be made using three different letters followed by three digits where the second digit cannot be 8 or 2?
Log On
Question 934646: How many different codes can be made using three different letters followed by three digits where the second digit cannot be 8 or 2? Answer by Edwin McCravy(20054) (Show Source):
The letters have to all be different but the digits don't.
Choose the 1st letter 26 ways
Choose the 2nd letter 25 ways
Choose the 3rd letter 24 ways
Choose the 1st digit 10 ways
Choose the 2nd digit 8 ways
Choose the 3rd letter 10 ways
Answer 26*25*24*10*8*10 = 12480000
Edwin
