Are You Human?

I recently tried to join a group on a social network. To deter bots, or at least catch bots signing up and spamming groups there will often be a question that requires some form of human intelligence. I don’t think AI has been purposed to spam these types of sites yet so it seems that is best for creating shitty pictures and doing people’s homework. The group I wanted to join had the following question:

The answer is, of course, fifty five. That’s the only way to complete this sum. But, my problem was knowing whether the person who wrote the question knew that and whether it would be expected that m people who answer it would get it correct. Maybe it doesn’t matter what answer you put as long as it’s a number? I don’t know what process the admins were using to get rid of bots. If you are expecting the answer 55 then perhaps you have not realised the level to which people will argue about this. There’s no-one so confident as someone who is wrong but has done their own research.