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If m is a number such that m le 5, then ...

If m is a number such that `m le 5`, then the probability that quadratic equation `2x^(2) + 2mx + m + 1 = 0` has real roots is

A

`(1)/(5)`

B

`(2)/(5)`

C

`(3)/(5)`

D

`(4)/(5)`

Text Solution

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The correct Answer is:
C
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PREMIERS PUBLISHERS-INTRODUCTION TO PROBABILITY THEORY-SOLUTION TO EXERCISE 12.5
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  3. A letter is taken at random from the letters of the word 'ASSISTANT' a...

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  4. A matrix is chosen at random from a set of all matrices of order 2 , w...

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  5. A bag contains 5 white and 3 black balls. Five balls are drawn success...

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  6. If A and B are two events such that A sub Band P(B) ne 0, then which o...

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  7. A bag contains 6 green, 2 white, and 7 black balls. If two balls are ...

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  8. If X and Y be two events such that P(X//Y) = 1/2, P(Y//X) = 1/3 and P(...

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  9. An urn contains 5 red and 5 black balls. A ball is drawn at random, it...

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  10. A number x is chosen at random from the first 100 natural numbers. Let...

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  11. If two events A and B are independent such that P(A) = 0.35 and P(A uu...

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  12. If two events A and B are such that P (barA) = 3/10 and P(A nn barB) =...

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  13. If A and B are two events such that P(A) = 0.4, P(B) = 0.8 and P(B//A)...

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  14. There are three events A, B and C of which one and only one can happpe...

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  15. If a and b are chosen randomly from the set {1,2,3,4} with replacement...

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  16. It is given that the events A and B are such that P(A) = 1/4, P (A//B)...

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  17. In a certain college 4% of the boys and 1% or the girls are taller tha...

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  18. Ten coins are tossed. The probability of getting at least 8 heads is

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  19. The probability of two events A and B are 0.3 and 0.6 respectively. Th...

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  20. If m is a number such that m le 5, then the probability that quadratic...

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