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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

`1/3`

Text Solution

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The correct Answer is:
C
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