ECZ 2023 · GCE Paper 2 · Question 1 — Sets

Question from ECZ 2023 · GCE Paper 2 · Question 1

(a) Simplify 13a328a2 b2 ÷ 65a4 b56a2 b4.[2]

Verified working — step 1

Dividing by a fraction means multiplying by its reciprocal:

(b) Learners in a Grade 10 class were asked the types of drinks they liked. The Venn diagram shows their responses.

Diagram for part (b)

(b(i)) Given that 40 learners liked Fanta, find the value of x.[2]

Verified working — step 1

Everyone who likes Fanta lies inside its circle:

(b(ii)) Find the total number of learners in the class.[1]

Verified working — step 1

Substitute x = 7 into every region and add:

(b(iii)) How many learners

(b(iii)(a)) did not like Fanta,[1]

Verified working — step 1

Fanta lovers = …

(b(iii)(b)) liked two types of drinks only?[1]

Verified working — step 1

"Two drinks only" is the three pair-only regions:

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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