Question

How many three​-digit numbers can be formed from the digits 0,1, 2, 3, 4, 5, 6, 7, and 8 if each digit can be used only​ once? I got this: 448

​How many are greater than 330​? <- I don't understand how to answer this.

I have looked up the answer and could probably figure it out, but please explain where the numbers you are multiplying are coming from. I want to learn how to answer this type of question on my own. I do not understand what numbers to multiply and why. I start with 5 because there are 5 digits for the hundreds place greater than 3, then multiply that by 8 for the remaining digits in the tens place. So I have 5*8, if that is correct then I just need the last number and to understand why that is the last number, and then I have to do the remaining numbers with the 3 in the hundreds place and get the sum.

Answer 1

315 numbers are greater than 330