Sets

2 marks · Normal

List all the elements of the set where is a whole number and .

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4, 5, 6, 7, 8

Also accept: {4,5,6,7,8}; 4,5,6,7,8

Common mistakes: Listing 9 as an element.; Missing 4 or 8.

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Marking points

B1 · 1 mark · Correctly identifies the set of whole numbers in the range (ignores format).

B1 · 1 mark · Lists all and only the correct elements (4, 5, 6, 7, 8) — order and brackets not required.

Worked solution

The smallest whole number is 4, and the largest whole number less than 9 is 8.

So the elements are: 4, 5, 6, 7, 8.