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The probability of choosing randomly a n...

The probability of choosing randomly a number c from the set (1,2,3,….9) such that the quadratic equation `x^(2)+4x+c=0` has real roots is :

A

`1//9`

B

`2//9`

C

`3//9`

D

`4//9`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1A
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  3. The probability of choosing randomly a number c from the set (1,2,3,…....

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  4. In a room, there are 6 couples .Out of them if 4 are chosen at random ...

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  5. A team of 8 couples (husband and wife) attend a lucky draw in which 4...

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  6. There are 20 pairs of shoes in a closet. Four shoes are selected at ra...

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  7. If 5 biscuits are distributed among 3 beggers, the chance that a parti...

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  8. If 10 sweets are to be distributed among 6 children, the probability t...

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  9. If 10 balls are to be distributed among 4 boxes, then the probability ...

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  10. The probability that when 12 balls are distributed among three boxes, ...

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  11. A contest consists of predicting the result (win, draw and loss) 5 foo...

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  12. A letter lock contains 4 rings, each ring containing 5 letters. All po...

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  13. There are 5 letters and 5 addressed envelopes. If the letters are put ...

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  14. There are 5 letters and 5 addressed envelopes. If the letters are put ...

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  15. If four squares are chosen at random on a chess board, then the probab...

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  16. If four squares are chosen at random on a chess board, then the probab...

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  17. If 7 squares are chosen at random on a chess board, the probability th...

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  18. Two squares of a chess board are chosen at random, the probability tha...

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  19. Three squares of a chess board are chosen at random, the probability t...

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  20. A determinant is chosen at random from the set of all determinants of ...

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