can someone explain why it is 8, 9 and 4 ?
the range is from 100 to 1000. 1000 is even.therefore we work with only 3 digit numbers.
focusing only on the hundreds digit place, there are 8 possibilities for that place. we cannot have 5 or 0 because a number cannot start with 0.
focusing only on the tens digit place, we can have any number except 5. Therefore, 9 possibilities.
focusing only on the units digit place, we can only have odd digits. There are 5 odd digits. We cannot have one of the odd digits, the number 5. Therefore 4 possible numbers