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Edexcel IGCSE Math A Higher 1.5.B union intersection membership and empty set notation

Edexcel IGCSE Math A Higher 1.5.B union intersection membership and empty set notation
Edexcel IGCSE Math A syllabusMath A 4MA1First assessment 2018

Practise set-symbol questions by listing union or intersection members and deciding whether values belong to named sets.

How this is tested

  • List members of A ∪ B or A ∩ C from given sets, with no repeats or extras.
  • Decide whether a number belongs to E or a named set using membership notation.
  • Explain a set statement by pointing to the shared or missing elements.

Question 4

[Maximum number: 3]

4E={9,10,11,12,13,14,15,16,17,18,19,20}4 \mathscr{E}=\{9,10,11,12,13,14,15,16,17,18,19,20\}A={A=\{ multiples of 3}\}B={B=\{ odd numbers }\}

Question 4(a)

(a)

List the members of the set

[ 2 ]

Question 4(a)(i)

(i)

A∩BA \cap B

[ 1 ]

Question 4(a)(ii)

(ii)

A∪BA \cup B

[ 1 ]

Question 4(b)

(b)

Is it true that 24∈A24 \in A ?

Tick one of the boxes below.

Figure for Question 4(b) — Edexcel IGCSE Math a Higher

Give a reason for your answer.

Set C has 4 members such that C∩B′={10,18}\quad C \cap B^{\prime}=\{10,18\}

[ 1 ]