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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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  2. There are n students in a class. Ler P(Elambda) be the probability tha...

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  3. There are n students in a class. Ler P(Elambda) be the probability tha...

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  4. A cube having all of its sides painted is cut by two horizontal, two v...

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  5. A cube having all of its sides painted is cut to be two horizontal, tw...

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  6. A cube having all of its sides painted is cut to be two horizontal, tw...

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  7. A JEE aspirant estimates that she will be successful with an 80 percen...

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  8. A JEE aspirant estimates that she will be successful with an 80 percen...

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  9. A JEE aspirant estimates that she will be successful with an 80 percen...

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

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  13. Let A = {1, 2, 3}, B = {2, 4} and R = {(1, 2), (2, 2), (2, 4), (3, 4)}...

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

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  16. A random variable X takes the values 0,1,2,3,..., with prbability P(X=...

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  17. A random variable X takes values 0, 1, 2, 3,… with probability proport...

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

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  19. Factorise : 8x^3 + y^3 + 27z^3 -18xyz

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  20. Evaluate int2/(2x+12)dx

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