Why are there repeated questions?

Question

I mean I can memorize the questions to get correct responses so what id thr point!

Answer 1

We can help minimize this issue creating new challenges. But it's a 'little' hard get the new codes accepted...

Answer 2

Thanks for the response, but why downvote?

Answer 3

There aren't enough questions for the anount of challenges most people do. And you can memorize them. That is why some people know all the answers. There is no point in keeping repeating it, but some of us like it.