Deshaun is choosing a 2-letter password from the letters A,B,C,D,E and F. The password cannot have the same letter repeated in it. How many such passwords are possible?

Respuesta :

2 letter password? weak

k, so ABCDEF, 6 choices
6 options for first letter
5 options for 2nd
6*5=30
30 passwords possible
would take less than 1 second to test all those possilibties