Answer :

A = Event of getting a sum of 3.


A = { (1,2) , (2,1) }


B = Event of sum of the numbers less than 6.


B = { (1,1) , (1,2) , (1,3) , (1,4) , (2,1) , (2,2) , (2,3) , (3,1) , (3,2) , (4,1) }


(AB) = { (1,2) , (2,1) } (1)


Now, we have


n(A) = 2


n(B) = 10


n(AB) = n(A) = 2 (2)


Now,




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