Math probability

Question

How many different(distinct) 13 digit passwords can be created using letters and digits with repetition?

Answer 1

Case sensitive

 

 52 letters and 10 digits = 62 characters possible

 

62^13 = 200028539268669788905472

 

 

Not case sensitive:

 

26 letters and 10 digits = 36 characters available

 

36^13 = 170581728179578208256