how many different 3 digit numbers can be made from the digits 0 to 7 inclusive if repetition is not aloud

Question

how many different 3 digit numbers can be made from the digits 0 to 7 inclusive if repetition is not aloud

Answer 1

0,1,2,3,4,5,6, and 7

there are 8 digits

first digit you are choosing from 8 digits

second digit you are choosing from 7 digits (no repetitions)

third digit you are choosing from 6 digits (no repetitions)

8*7*6=336 different 3-digit numbers