Answer:
N = 8(7)(6) = 336
Explanation:
You can use box method for this problem. Since it requires 3-digit number, then you have to draw three boxes. In the first box, you can select 8 numbers. Since no repetition is allowed, you can only select from 7 numbers in the 2nd box and 6 numbers in the third box. Get the product of the numbers inside the box and the answer is 336.
