Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Sets & FunctionsSets and Venn Diagrams
If the number of elements in set $A$ is $20$, in set $B$ is $30$, and the number of elements in the union of sets $A$ and $B$ is $40$, what is the number of elements in the intersection of sets $A$ and $B$?
- A.$5$
- B.$10$Correct answer
- C.$15$
- D.$20$
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Practice these MCQs in the appQuick fact: The number of elements in the intersection is $10$.