you already know that the total question that you will be ask in jamb exam is 180 questions

use of english 60
and other 3 subject of your choose have 40 questions making 180



how jamb mark their exam
use of english 60
if u score 60 out of 60 it will mutiple by 100 and then divide by 60

60*100=6000/60=100

and other 3 subject 40 question if u get

40*100=4000/40=100

the total score is over 400 out of 180 questions.