Your password for a given website is made up of three letters followed by

Question

four numbers. Find the number of possible passwords if there are no
restrictions on what three letters and what four numbers can be used.


Pls check if my answer is correct

26C3*10C4
=26!/(26-3)!3! . 10!/(10-4)!4!
= 26*25*24*23!/23!*6 . 10*9*8*7*6!/6!*4*3*2*1
=15600/6 * 5040/24
=2600*210

Answer 1

see below