Let A and B be 2 events such that P(A) = 0 3 and P(A union B bar) = 0 - Maths -

Question

Let A and B be 2 events such that P(A) = 0 3 and P(A union B bar) =
0 8 If A and B are independent events then P(B) =

Neha Sethi · Accepted Answer

Dear student
There is mistake in question the correct question will be :
Let A and B be two events  such that PA=0
3 and PA∪B=0
8If A and B are independent events then PB=
?
Solution:
Given : A and B are two independent events ,⇒PA∩B=PA PB  
1We know that,PA∪B=PA+ PB-PA∩BGiven: PA=0
3 and PA∪B=0 8⇒0 8=0
3+ PB-PA∩B⇒0 8=0
3+ PB-PA PB   using 1⇒0 8=0
3+ PB-0 3 PB⇒0 5=PB1-0 3⇒0 5=PB 0
7⇒PB=0 50 7=57
Regards

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Let A and B be 2 events such that P(A) = 0.3 and P(A union B bar) = 0.8 If A and B are independent events then P(B) = .........

Let A and B be 2 events such that P(A) = 0.3 and P(A union B bar) = 0.8 If A and B are independent events then P(B) = ......... e everts 0.3 and PtA •oz.