Using operators plus, minus, multiplied by and divide by, and as many brackets as you want, can you do a formula which uses 3, 3, 5 and 7 to make 24?
Each number must be used and can only be used once (so there will be two 3's).
So, for example, (3x7)+3 makes 24, but this isn't valid because the 5 wasn't used.
I don't know if this is possible, btw! It's in a game I'm playing.