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In a match between A and B:

   

the probability of winning of A is

   

. What is the probability of winning of B?

   

the probability of losing the match is

   

for B. What is the probability of winning of A?

Solution:

   

We know that,

The probability of winning of A

   

Probability of losing of A

   

And,

Probability of losing of A

   

Probability of winning of B

Therefore,

Probability of winning of A

   

Probability of winning of B

   

Probability of winning of B

   

Hence, probability of winning of B

   

   

We know that,

Probability of winning of B

   

 Probability of losing of B

   

And, probability of losing of B

   

Probability of winning of A

Therefore,

Probability of winning of A