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📐 Mathematics - Class 10
Lesson 1 · Cardinality of Three Sets

Cardinality of Three Sets

MathematicsSubject
8 minEstimated read
Activity 2

Comparing two Venn diagrams of three sets

Method
  • Look closely at Figure 1 and Figure 2, the two Venn diagrams of the sets A, B and C.
  • Write the elements of A, B and C in each figure by the listing method.
  • Find the cardinalities of A, B and C in Figure 1.
  • Find the cardinalities of A, B and C in Figure 2.
  • Find n(A ∪ B ∪ C) and n(U) in Figure 1.
  • Find n(A ∪ B ∪ C) and n(U) in Figure 2.
  • Discuss your answers with your friends and write your conclusions in a table.
Discussion
  • What is the relation between n(A ∪ B ∪ C) and n(U) in Figure 1 and in Figure 2? Why?
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