Paper 22 Q20IGCSE 0580 May/June 2023

Question

20 In the Venn diagram, shade the region A+Bl+C. A B C

This question tests your understanding of Venn diagram notation and set operations. You need to interpret the expression A+B'+C and shade the correct region on a three-circle Venn diagram.

Step-by-Step Solution

Key Takeaway

In Venn diagrams, B' means everything outside circle B, and the + symbol means union (shade if the region belongs to any of the sets).

Common Mistakes

Confusing B' with just the region outside all circles, when it actually means everything except what's in circle B
Treating + as intersection instead of union, leading to shading only the overlap regions rather than combining all the sets

Exam Tip

When dealing with complements ('), start by identifying what NOT to shade, then shade everything else in that part of the expression.

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