i secured 77.7 percentile whats rank i expect and Marks also...??

Hello Aspirant,

The calculation of the marks & rank would be difficult based on your percentile. You may calculate your expected rank by this formula

100 - your total percentile score is the percentage of people ahead of you. 874469 are the number of candidates appeared for Jan exam. So rank formula is (100 - your total score) X 869010 /100. If the number of candidates for April exam increased to 1200000 then your final rank shall be (100 - your total score) X 1200000/100

Using the formula
(100 - your total score) X 869010 /100

Your probable rank will be 1,93,789.

Based on this percentile chances are less to get a seat in NITs, IIITs & GFTIs , You can go for the state level counselling, To know your admission possibilities in state level counselling you can use JEE Main College Predictor tool given below.

JEE Main College Predictor 2020 - Predict Colleges based on your JEE Main Rank

JEE Main College Predictor – Know your College Admission Chances Based on your Rank/Percentile, Home State, Caste, Gender, Exam Result & Get ...

Good Luck!