I find these a bit more complicated from the problem in my previous post. I can't seem to apply that logic to these problems.

1. How many 3-digit positive integers are odd and do not contain the digit "5"?

2. A talent contest has 8 contestants. Judges must award prizes for first, second, and third places. If there are no ties, in how many different ways can the 3 prizes be awarded?

I'm sure these are so simple, but I've tried many different approaches and I keep getting wrong answers. (I'm studying for a standardized test...)

Thank you.