Where do I can add quiz?

Answer 1

The quiz factory feature is no more available in sololearn because there were many quizzes which arent yet approved so when they will need more they will open that again.

This is what I get from your question

Answer 2

Thank you Nilesh
I too add some questions they are not approved yet.now I know the reason

Answer 3

Well from my opinion, there are only so few questions, they are getting repetetive after 150 Vhallenges....

It is unpractical that quiz factory is closed