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Suppose E1, E2 and E3 be three mutually ...

Suppose `E_1, E_2 and E_3` be three mutually exclusive events such that `P(E_i)=p_i" for "i=1, 2, 3`.
If `p_1, p_2 and p_3 ` are the roots of `27x^3-27x^2+ax-1=0` the value of a is

A

3

B

6

C

9

D

12

Text Solution

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The correct Answer is:
(c)
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ARIHANT MATHS-PROBABILITY-Exercise (Passage Based Questions)
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  9. Suppose E1, E2 and E3 be three mutually exclusive events such that P(E...

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  10. Suppose E1, E2 and E3 be three mutually exclusive events such that P(E...

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  11. Suppose E1, E2 and E3 be three mutually exclusive events such that P(E...

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  12. Let A={1, 2, 3} and B={-2, -1, 0, 1, 2,3}. The probability of increas...

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  13. Let A={1, ,2, 3} and B={-2, -1, 0, 1, 2,3}. The probability of non d...

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  14. Let A={1, ,2, 3} and B={-2, -1, 0, 1, 2,3}. The probability of incre...

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  17. A random variable X takes values 0, 1, 2,...... with probability propo...

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  18. Let n=10lambda+r", where " lambda,rinN, 0lerle9. A number a is chosen...

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