Hi aspirant,

See it is not at all easy to predict how many numbers will you require to get a rank around 30000 as a depends upon several factors such as:

• Number of candidates appeared
• Difficulty level of questions
• Moderation policy applied and much more

But if we only follow the past trends you would require 132-148 marks. Please note that I have assumed you are talking about 30000 CRL. If you about your category rank it would be some thing around 5-7k. To know more, visit https://engineering.careers360.com/articles/jee-main-marks-vs-rank

Hope it helps!!