| 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 |
If f is a function from A to B, then f is onto function if: |
- A. Range f≠ A
- B. Range f = B
- C. Dom f = A
- D. Second element of all ordered pairs contained in f is not repeated.
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| 3 |
The different number of ways to describe a set are: |
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| 4 |
Power set of an empty set is: |
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| 5 |
The number of element in power set {1.2.3} is. |
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| 6 |
If A= {1,2,3} , B ={4,5} and R+{(1,4),(2,5),(3,4)} then R is __________ |
- A. One - one function from A to B
- B. A function A to A
- C. Not a funtion
- D. An onto function from A to B
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| 7 |
The number of elements of the power set {a,b} are. |
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| 8 |
Coding formula of group data of the arithmetic mean is: |
- A. X̅ = ∑fX/∑f
- B. X̅ = ∑fD/∑f
- C. X̅ = A + ∑fu/∑f x h
- D. X̅ = A + ∑fu/∑f
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| 9 |
If A⊆ B the A⋂ B = ______ |
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| 10 |
The point (-5,-7) lies in ........ quadrant. |
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