TS ICET 2017 Question Paper with Solutions for online practice

Question : 147 of 200

Marks: +1, -0

In a contest three persons A. B and C arc participating.The probability of A wining is double that of B and probability of B winning is double that of C. The probability of A losing the contest is :

$1/7$
$2/7$
$3/7$
$4/7$

Validate

Solution:

Given p(A) = 2p(B) = 2p(C)
⇒ p(A) = 4p(C)
∴ p(A) : p(B) : p(C) = 4 : 2 : 1
A losing implies that either B or C wins.
∴ Required probability

={2+1}/{4+2+1}=3/7

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