Having a lot of trouble need help/answer

Question

You pick 4 digits (0-9) at random without replacement, and write them in the order picked.

What is the probability that you have written the first 4 digits of your phone number? Assume there are no repeats of digits in your phone number.

Give your answer as a fraction

Answer 1

(10!/6!) = 10*9*8*7*6 = 30,240 different way of 4 digits (ordered)

Probability that any one of the ordered 4 digits is the first 4 digits of your phone number = 1/30,240