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  • Provide Solution For R.D. Sharma Maths Class 12 Chapter 30 Probaility Exercise 30.4 Question 6 Sub Question 5 Maths Textbook Solution.

Provide Solution For  R.D. Sharma Maths Class 12 Chapter 30 Probaility  Exercise 30.4 Question 6 Sub Question 5 Maths Textbook Solution.

Answers (1)

Answer:  0.72

Hint: Using,

                P\left ( A\cap B \right )=P\left ( A \right )+P\left ( B \right )-P\left ( A\cap B \right )

Given,

          P\left ( A \right )=0.3

           P\left ( B \right )=0.6 
          
 Solution: 

As we know, Two events are said to be independent if the product of the events are equal to their intersection. i.e.P\left ( A\cap B \right )=P\left ( A \right )P\left ( B \right )

 P\left ( A\cap B \right )=P\left ( A \right )P\left ( B \right )=0.3*0.6=0.18

\begin{aligned} P(A \cup B) &=P(A)+P(B)-P(A \cap B) \\ &=0.3+0.6-0.18 \\ &=0.9-0.18 \\ &=0.72 \end{aligned}

 

 

 

 

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