A password can be created using alphabets and numbers. If it is 8 characters long, what is the number of passwords that can be created?
The password is 8 characters long and can be created with alphabets and numbers. Assuming capital letters are not allowed, for each character there are 26 + 10 = 36 options.
This gives the number of passwords that can be created as `(36)^8 ~~ 3*10^12`