SSC Steno Grade C and D 22 Dec 2020 Shift 1 Paper

Among 80 students. 24 passed in Chemistry, 35 passed in Physics and 29 passed in Mathematics, 8 students did not appear for the examination. If 2 students have passed in all the three subjects. 2 students have passed in Physics and Chemistry both but nor in Mathematics. 2 students have passed in Chemistry and Mathematics both bin not in Physics, and 8 students have passed in Physics and Mathematics both but not in Chemistry, then how many students have passed in Mathematics only?