Maths - Venn Diagrams - Symbols and Diagrams 1 - IGCSE / GCSE cram

An IGCSE based quiz on Venn Diagrams, Its symbols and the format you draw them in.

What do Venn Diagrams symbolise?

Venn Diagrams symbolise two different sets that overlap each other.

What does the symbol ‘U’ mean when relating to sets and Venn Diagrams?

It means ‘Union’ - those sets which combine both together. For example, if A = 1, 2, 3 and B = 4, 5, 6, then A U B = 1, 2, 3, 4, 5, 6.

What does the ‘∩’ symbol mean?

It means those elements that are common to both sets. For example, if A = 1, 2, 3 and B = 2, 3, 4, then A ∩ B = 2, 3.

What does the ‘ξ’ symbol mean?

It means ‘universal’, symbolising the set that contains all those digits. The set also contains any A, B or whatever smaller sets there are.

What is the overlap in two circles in a Venn Diagram? (e.g. A and B)

It symbolises the set of both A and B, representing the shared elements between the two sets.

What is the space outside both circles?

It represents those elements which are in neither set

What does the apostrophe (‘) in A’ mean?

It means ‘Not A’, or simply those digits that are not within the set A.

Let’s do some questions.

Q1) What is ξ?

Universal set, or basically all digits within the range