If A $ B are independent events $ P(A)=0.3 P(B)= 1-a $ P(A∩B)=0.2 find a

1) 5/7

2) 2/7

3) 1

4) None

Dear Mayank

A and B are independent

 P(A∩B) = P(A)P(B)

0.2       = 0.3 (1-a)

 2/3  =1-a

a = 1/3

 option 4 is correct

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