Question: discrete Mathematics course and topic is probability.. I need 2nd part only and need exact solution because I am posting it 3rd time. I will

discrete Mathematics course and topic is probability.. I need 2nd part only and need exact solution because I am posting it 3rd time. I will appreciate with thumb up on correct solution. otherwise will be thumb down with bad feedback

Question 6 (a) Let A, B, C be sets, Prove that (AAB) A (AAC) = BAC. (7 marks) (b) The integers 1 to 9 inclusive are placed randomly in a 3 x 3 array (so that there are 3 integers in each row and in each column). Find the probability that the sum of each row and the sum of each column is old. (4 marks) There are two diagonals, one going from top left to bottom right, and one going from top right to bottom left. Find the conditional probability that the sum of each diagonal is odd given that the sum of each row and each column is odd. (4 marks)

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