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An unbiased die is thrown twice. Let ...

An unbiased die is thrown twice. Let the event A be "odd number on the first throw" and B the event "odd number on the second throw". Check the independence of the events A and B.

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P(A)=18/36=1/2
P(B)=18/36=1/2
P(A`nn`B)=9/36=1/4
P(A)*P(B)=1/2*1/2=1/4
so, P(A)*P(B)=P(A`nn`B)
that means they are independent
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