There are three digital cards of 0.35, which make up a three digit number. What is the percentage of 0 at the end?

There are three digital cards of 0.35, which make up a three digit number. What is the percentage of 0 at the end?

Grade six
Because there are only 3 digits involved, so you can arrange them directly on the draft paper
305; 350; 530; 503; so the probability of 0 at the end is 1 / 2
Of course, if there are many numbers, we can use another method:
Because 0 can't be in the first place, you can look at n digits, then the probability is 1 / (n-1)