= ....................................................... k (1) (Total for Question 18 is 4 marks) ___________________________________________________________________________ E 19 The Venn diagram shows a universal set and sets and where 6, 3, 7, 5, 2, 9, 4 and 8 A, B C represent numbers of elements. (a) Find n(A B)ʹ ∪ ....................................................... (1) (b) Find n((A C)ʹ B) ∪ ∩ ....................................................... (1) (c) On the Venn diagram, shade the region that represents the set (A B) C ∪ ∩ (1) for Question 19 is 3 marks) ___________________________________________________________________________ 20 is a triangle. OAB is the midpoint of and is the midpoint of X OA W OB. is the point on such that : = 2 : 1 Y AW AY YW and (a) Express in terms of a and b (i)
k = ....................................................... (1) (Total for Question 18 is 4 marks) ___________________________________________________________________________ 19 The Venn diagram shows a universal set E and sets A, B and C where 6, 3, 7, 5, 2, 9, 4 and 8 represent numbers of elements. (a) Find n(A ∪ B)ʹ ....................................................... (1) (b) Find n((A ∪ C)ʹ ∩ B) ....................................................... (1) (c) On the Venn diagram, shade the region that represents the set (A ∪ B) ∩ C (1) for Question 19 is 3 marks) ___________________________________________________________________________ 20 OAB is a triangle. X is the midpoint of OA and W is the midpoint of OB. Y is the point on AW such that AY : YW = 2 : 1 and (a) Express in terms of a and b (i)
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