I know that the setter has asked that we don't ask for help on the internet but I've spent ages on this and am stuck on several. The closing date is this weekend and I'm getting desperate. Is there anyone with the quiz prepared to help with 3, 4, 8, 12, 15, 16, 24, 57, and 104?? Except for the last mentioned they are all pictures of logos so I can't give clues as such.