Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 Logical Reasoning Venn Diagram Venn Diagram Problems
In examination 30% students failed in Economics and 20% failed in History. If 10% failed in both and those who passed in both numbered 600, then what is the total number of students who appeared in the examination?
1
990
2
1000
3
1200
4
1500