Every correct answer gets you 4 marks and a wrong answer takes away 1 mark in the form of Negative marking. So if you attempted 50 MCQs and 30 are correct, it is 120. Then you answer 20 wrong, 20 marks are taken away in the form of Negative marking and your total score will be 100. This is for MCQs. But if it is for Numeric Value questions, there is no negative marking and in that case, your total score will be 120. For more information, please read our article: https://engineering.careers360.com/articles/jee-main-exam-pattern and for JEE preparation, use our knockout package: https://learn.careers360.com/knockout-jee-main-april/