| 1 |
A collection of well-defined distinct objects is called. |
- A. subset
- B. Power set
- C. Set
- D. None of these
|
| 2 |
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
|
| 3 |
The relation {(1, 2),(2, 3),(3, 3),(3, 4)} is: |
- A. Onto function
- B. In to function
- C. Not a function
- D. One-one function
|
| 4 |
A set containing no element is called. |
- A. subset
- B. Empty set
- C. Singleton set
- D. Super set
|
| 5 |
(A∩B)'= _____________ |
- A. A'∪B'
- B. A'∩B'
- C. A∩B
- D. A∪B
|
| 6 |
The domain of {(a,b),(b,c),(c,d)} is............ |
- A. {a,b,c}
- B. {b,c,d}
- C. {a,b}
- D. {a,b,c,d}
|
| 7 |
The harmonic mean of the observation 0,15,12, is: |
- A. 3.7
- B. 7.3
- C. 6.7
- D. no harmonic mean
|
| 8 |
(A⋃B)⋃C = ________ |
- A. A ⋂ (B⋃C)
- B. (A⋃B)⋂C
- C. A⋃ (B⋃C)
- D. A⋂(B⋂C)
|
| 9 |
If set has 3 and B has 2 elements then number binary relations of A x B. |
- A. 2<sup>2</sup>
- B. 2<sup>8</sup>
- C. 2<sup>6</sup>
- D. 2<sup>3</sup>
|
| 10 |
Sum of the deviations of values x from its mean is always ''i.e ∑(x-x̅)’is to equal: |
- A. itself
- B. zero
- C. median
- D. mode
|
