Set Theory questions with answers
3 multiple-choice questions. Open any question for its answer and explanation.
- In a group of 26 persons, 8 take tea but not coffee and 16 take tea. The number of persons who take coffee but not tea is :
- In a class of 33 students, 20 play cricket, 25 play football,and 18 play volleyball; 15 play both cricket and football, 12 play football and volleyball, and 10 play cricket and volleyball. If each student plays at least one game, then the number of students who play all three games is :
- 19.Consider the following Venn diagram drawn after conducting a survey of 50 persons, most of whom read one or more newspapers: In a population of 10,000 persons, how many can be expected to be reading at least two newspapers?