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с) d) 84 60. a) 210 y 301 c) 294 Six per...

с) d) 84 60. a) 210 y 301 c) 294 Six persons A, B, C, D, E and F are to be seated at a circular table. In how many ways can this be done if A must always have either B or C on his right and B must always either C or D on his right? 12 b) 120 - o 18 d) 38 If the letters of the word "SACHIN” are arranged in all possible ways and these words are written ant as in dictionan then the word SACHIN anpears at serial numher 61.

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