1 |
Which of the following is commutative law? |
- A. A∪ (B ∪ C) = (A∪ B)∪ C
- B. A∩ (B∩C)= (A∩B)∩C
- C. A∪ B = B ∩ A
- D. (A ∪ b)<sup>c</sup> = A<sup>c</sup> ∩ B<sup>c</sup>
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2 |
A∩ A<sup>c</sup>= ........................... |
- A. ∪
- B. A<sup>c</sup>
- C. ∅
- D. A
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3 |
The Range of R<div>={(1,3),(2,2),(3,1)(4,4)} is.</div> |
- A. {1,2,4}
- B. {3,2,4}
- C. {1,2,3,4}
- D. {1,3,4}
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4 |
If set a has 3 elements and B has 4 then A x B has __________ elements. |
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5 |
If { x|x=p/q, q<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">≠0,p,q</span><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">∈Z</span>} then this is a _____________ |
- A. Set of even numbers
- B. Set of rational number
- C. Set of irraional numbers
- D. Set of integers
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6 |
The set {x} x∈ A and x∉ B } is....................... |
- A. A∪ B
- B. A∩ B
- C. A - B
- D. B - A
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7 |
The geometric mean of the a observations 2,4,8, is: |
- A. 2
- B. 8
- C. 4
- D. no geometric mean
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8 |
y co-ordinate of every pint on x-axis is. |
- A. +ve
- B. -Ve
- C. zero
- D. 1
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9 |
A set Q = {a/b} a, b∈ Z ^ b≠ 0} is called a set of. |
- A. Whole numbers
- B. Natural number
- C. Irrational numbers
- D. Rational numbers
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10 |
If A⊆ B and B⊆ a , then |
- A. A = B
- B. A≠ B
- C. A∩ B =∅
- D. A∪ B =∅
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