Math, asked by durivirajini9488, 10 months ago

. If A, B, C are any three events such that probability of B is twice as that of probability of A and probability of C is thrice as that of probability of A and if P A( ) ∩ = B 16, P B( ) ∩ = C 14 , P A( ) ∩ = C 18 , P A( ) ∪ ∪ B C = 910 , P A( ) ∩ ∩ B C = 115 , then find PA PB ( ), ( ) and P C( )?​

Answers

Answered by amitnrw
6

Given :   A, B, C are any three events such that probability of B is twice as that of probability of A and probability of C is thrice as that of probability of A  

To find : A , B & C

Solution:

Let say P(A)  = x

then P(B)  = 2x

& P(C)  = 3x

P ( A ∩ B )  = 0.16

P ( B ∩ C )  = 0.14

P ( A ∩ C )  = 0.18

P ( A U B U C)  = 0.91

P ( A ∩ B ∩ C) = 0.115

P ( A U B U C)  = P(A) + P(B) + P(C)  - P ( A ∩ B )  - P ( B ∩ C ) - P ( A ∩ C )  + P ( A ∩ B ∩ C)

=> 0.91 = x + 2x + 3x - 0.16 -0.14 - 0.18 + 0.115

=> 6x = 1.275

=> x = 0.2125

P(A) = 0.2125

P(B) = 0.425

P(C) = 0.6375

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