Question 3 of 20 in Sets

Sets

2 marks · Easy

Let X = \{7, 12, 19\} and Y = \{12, 14, 19\}. Write down:

(a)

X \cap Y

[1 mark]

(b)

X \cup Y

[1 mark]

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(a) X \cap Y = \{12, 19\}

(b) X \cup Y = \{7, 12, 14, 19\}

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Marking points

B1 (a) · 1 mark · Correctly states X \cap Y = {12, 19}

B1 (b) · 1 mark · Correctly states X \cup Y = {7, 12, 14, 19}

Worked solution

Find elements in both sets for intersection, and in either set for union:

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