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1. Let $E = \{ \text{even numbers between 1 and 25} \} \newline A = \{ 2, 8, 10, 14 \} \newline B = \{ 6, 8, 20 \} \newline C = \{ 6, 18, 20, 22 \} \newline (a) Complete the Venn diagram for this information - Edexcel - GCSE Maths - Question 2 - 2018 - Paper 2

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1.-Let-$E-=-\{-\text{even-numbers-between-1-and-25}-\}-\newline-A-=-\{-2,-8,-10,-14-\}-\newline-B-=-\{-6,-8,-20-\}-\newline-C-=-\{-6,-18,-20,-22-\}-\newline-(a)-Complete-the-Venn-diagram-for-this-information-Edexcel-GCSE Maths-Question 2-2018-Paper 2.png

1. Let $E = \{ \text{even numbers between 1 and 25} \} \newline A = \{ 2, 8, 10, 14 \} \newline B = \{ 6, 8, 20 \} \newline C = \{ 6, 18, 20, 22 \} \newline (a) Comp... show full transcript

Worked Solution & Example Answer:1. Let $E = \{ \text{even numbers between 1 and 25} \} \newline A = \{ 2, 8, 10, 14 \} \newline B = \{ 6, 8, 20 \} \newline C = \{ 6, 18, 20, 22 \} \newline (a) Complete the Venn diagram for this information - Edexcel - GCSE Maths - Question 2 - 2018 - Paper 2

Step 1

Complete the Venn diagram for this information.

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Answer

To complete the Venn diagram, we identify the elements in each set and their intersections. \newline \newline - Set A contains the numbers: 2, 8, 10, 14. \newline - Set B contains the numbers: 6, 8, 20. \newline - Set C contains the numbers: 6, 18, 20, 22. \newline \newline The intersections are: \newline - AB={8}A \cap B = \{ 8 \}. \newline - BC={20,6}B \cap C = \{ 20, 6 \}. \newline - AC={}A \cap C = \{ \}. \newline - ABC={}A \cap B \cap C = \{ \}. \newline \newline The complete Venn diagram will show: \newline - Region A contains 2, 10, 14 (Placement in the A circle only). \newline - Region B contains 6 (only), alongside 8 in the overlap with A. \newline - Region C contains 18 and 22 (placement in the C circle only), and 20 in the overlap with B. \newline - The element 8 is thus in the overlap of A and B: \newline - A Venn diagram representation should look as follows: (A) [2, 10, 14], (B) [6], (C) [18, 22], (A ∩ B) [8], (B ∩ C) [20].

Step 2

Find the probability that the number is a member of A ∩ B.

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Answer

The intersection of sets A and B consists of the elements common to both sets. \newline \newline From the previous step, we identified that: \newline - AB={8}A \cap B = \{ 8 \}. \newline \newline Now, the total number of elements in set EE is 12 (all even numbers between 1 and 25: {2,4,6,8,10,12,14,16,18,20,22,24}\{2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24\}). \newline \newline The probability that a number chosen at random from EE is a member of ABA \cap B is calculated as follows: \newline \newline P(AB)=Number of favorable outcomesTotal number of outcomes=112P(A \cap B) = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} = \frac{1}{12}

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