Age 16 to 18 Challenge Level:
You might find it helpful to write down the conditions for the binomial distribution before you start deciding whether each situation can be described by the binomial distribution or not.
For each situation, can you match the binomial distribution conditions up to the situation?
If you can, it's binomial; if not, it almost certainly isn't. Which condition or conditions fail?
One thing to watch out for: "success" doesn't necessarily mean something "good"; "success" is used only to describe the thing we are counting.