ECAT Mathematics Chapter 23 With Answers

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ECAT Mathematics Chapter 23

Sr. # Questions Answers Choice
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7 Two sets A and B are said to be disjoint if
8 If A and B are two sets then intersection of A and B is denoted by
9 Write down the power set of {9, 11}
10 What is the number of elements of the power set of { } 0 1 2 3
11 What is the number of elements of the power set of {0, 1} 1 2 3 4
12 If n(A) = n then n(P(A)) is 2n n<sup>2</sup> n/2 2<sup>n</sup>
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14 A set having only one element is called An empty set Universal set A singleton set A power set
15 Which of the following sets is finite The set of natural numbers between 3 and 10 The set of rational numbers between 3 and 10 The set of real numbers between 0 and 1 The set of rational numbers between 0 and 1
16 Which of the following sets in infinite The set of students of your class The set of all schools in Pakistan The set of natural numbers between 3 and 10 The set of rational numbers between 3 and 10
17 A - B = ______
18 The sets {1, 2, 4} and {4, 6, 8, 10} are Equal sets Equivalent sets Disjoint sets Over lapping sets
19 A finite set An infinite set An empty set None of these
20 An empty set Universal set A singleton set None of these
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