Paper 22 Q6(c)IGCSE 0580 May/June 2023

Question

ξ ={x|1⩽x⩽20} E= {even numbers} M= {multiples of 5} ygE. Write down a possible value of y. 4 5

This question tests understanding of set notation and complements. You need to identify what values are NOT in a given set within the universal set.

Step-by-Step Solution

Key Takeaway

The complement of a set contains all elements in the universal set that are NOT in the original set.

Common Mistakes

Writing an even number like 4 or 10, forgetting that these ARE in set E so cannot be in E'
Writing a number outside the universal set range like 22 or 0, which aren't valid elements of ξ

Exam Tip

When finding complements, first list out the original set clearly, then identify what's left in the universal set.

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