Mathematics Practice Tests (SS1 – SS3) – Set Theory


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Set Theory:

Which of the following is the Set B = {x: x > -3}

A. {-2, -1, 0, 1, 2, 3,….}   
B. {-3, -2, -1, 0, 1, 2, 3,….}  
C. {-4, -3, -2, -1, 0, 1, 2, 3,….}  
D. none of the above


Set Theory:

If U = {1, 2, 3, 4, 5}, A = {1, 2} and B = {2, 3}, find A’ ∩ B’

A. {2, 3, 4, 5}      B. {1, 2}      C. {2, 3,}      D. {4, 5}


The Universal Set U = {1, 2, 3, ……, 19, 20} and subsets A, B, C of U are given by
A = (multiples of five)
B = (multiples of four)
C = (multiples of three)

Find A ∩ B .

A. {15, 18, 20}
B. {3, 6, 9, 12, 15, 18}
C. {20}
D. {5, 10, 15, 20}


Set Theory:

Which of the following is the Set C = {x: -2 < x < 7}

A. {-2, -1, 0, 1, 2, 3, 4, 5, 6}   
B. {-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}  
C. {-1, 0, 1, 2, 3, 4, 5, 6, 7}  
D. {-2, -1, 0, 1, 2, 3, 4, 5, 6, 7}


x ⊂ A means _______

A. x is an element of A
B. A is an element of x
C. x is not a member of A
D. x is a proper subset of A.


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