CAT 2018 Question Paper Shift 1 Solved Paper

Let the number of students who studying only H be h, only E be e, only H and P but not E be x, only E and P but not H be yGiven only P=0 All three =10; Studying only H and E but notP=20
Given number of students studying H= Number of students studying E
=h+x+20+10
=e+y+20+10
h+x=e+y total number of students =74
Therefore, h+x+20+10+e+y=74
h+x+e+y=44
h+x+h+x=44
h+x=22
Therefore, the number of students studying