True/False
Indicate whether the
statement is true or false.
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1.
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If A = {3, 5, 7} then AÎ7.
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2.
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{A, B, C} = {C, A, B}.
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3.
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If A = {1, 4, 5} and B = {5} then AÈB = A.
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4.
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{1, 5, 3}\{3, 1, 2} = {5, 2}.
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5.
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For any two sets A and B, AÈB = BÈA.
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6.
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For any two sets A and B, A \B = B\
A.
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7.
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If C = {d, g, j} and D = {f, h, t, v, z} then DÇC = Ø.
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8.
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If the universal set is the set of integers between 1 and 10 inclusive, then the
complement of {1, 2, 3, 4, 9} is {5, 6, 7, 8}.
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9.
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The empty set is a subset of every other set.
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10.
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In a survey of 100 people it’s found that 23 own a dog and 45 own a cat.
If 5 people own both a dog and a cat, the number of people owning neither is 37.
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