Hii Razeem,

Hope you are doing well.

A percentile (or a centile) is a measure used in statistics indicating the value below which a given percentage of observations in a group of observations fall.

50th percentile means students with more marks than the bottom half.

In NEET,

720-138 score is 50th percentile.

For different entrance exams it is different. The percentile is differs according to the exams as it depends on some factors/conditions.

I hope I'm clear to you.

BEST wishes ahead.

Hello sir.

The minimum marks required are 60 to 70 marks to achieve 50 percentile in jee mains.