O/Level Mathematics - Venn Diagrams (Sets)
Subject: Mathematics (Maths)
Topic: Sets & Probability
Grade: 10 & 11
Download this essential revision note for Venn Diagrams. This PDF explains how to shade regions, calculate elements using the formula n(A ∪ B) = n(A) + n(B) - n(A ∩ B), and solve 3-circle problems.
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Key Concepts Covered:
- Intersection (A ∩ B): The region shared by both sets (common elements).
- Union (A ∪ B): All elements in both Set A and Set B combined.
- Complement (A'): Everything outside of Set A within the universal set.
- Subset (A ⊂ B): When every element of A is also in B.
Exam Tip: In Paper II, always start filling the Venn diagram from the center (intersection of all 3 sets) and work outwards.
Keywords: O/L Maths Sets, Shading Venn Diagrams, Probability Formulas, Sri Lanka Maths Syllabus.