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Let all letters of word 'MATHEMATICS' ar...

Let all letters of word 'MATHEMATICS' are arranged in all possible order. Three events A, B and C are defined as : (A)Both M are together (B) Both T are together (C)Both A are together which of the following hold(s) good?
(a) `P(A)=P(B)=2/(11)`
(b)`P(AnnB)=P(BnnC)=P(CnnA)=2/(55)`
(c) `P(AnnBnnC)=4/(495)`
(d)`P((Ann B )"|" C )=(58)/(405)`

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