| 1 |
The formula of group data of the median is: |
- A. l + h/f (n/2 -c)
- B. l +∑fx/∑f x n,
- C. l + f<sub>m </sub>- f<sub>1</sub>/2f<sub>m</sub> - f<sub>1</sub> - f<sub>2</sub> x n,
- D. A + ∑fu/∑f x n
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| 2 |
Number of elements in power set of {1,2,3} |
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| 3 |
If b<sup>2</sup>-4ac > 0 and is not a perfect square, then roots are: |
- A. Rationaland unequal
- B. Irrationaland equal
- C. Rationaland equal
- D. Irrationaland unequal
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| 4 |
If a = 7, b = 8 and c = 1 then b<sup>2</sup>-4ac is equal to: |
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| 5 |
Power set of an empty set is: |
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| 6 |
A tangent is perpendicular to the radius of a circle at its point of: |
- A. Tangent
- B. Touch
- C. Contact
- D. Meet
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| 7 |
Sum of the deviations of the variable "X" from its mean is always: |
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| 8 |
A line which has only one point in common whit a circle is called: |
- A. chord
- B. secant
- C. tangent
- D. sector
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| 9 |
(A⋃B)⋃C = ________ |
- A. A ⋂ (B⋃C)
- B. (A⋃B)⋂C
- C. A⋃ (B⋃C)
- D. A⋂(B⋂C)
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| 10 |
Co sec 30<sup>o</sup> = ................. |
- A. 1/2
- B. √3/2
- C. 2
- D. 2/√3
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