There are A,B techers and C,D doctors.Find the possible no of combinations that should not be repeated more than once?
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Answer / Ashish Dixit
First, let's find the total number of combinations without repetition for the teachers (A and B) and doctors (C and D). This would be 4! (4 factorial). Now, since we don't want repetitions, subtract the number of combinations with repetitions, which is 2! (2 factorial) for each set of A,B or C,D. The final result is 4! - 2!(A,B repeats) - 2!(C,D repeats).
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