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Two teachers are interviewing top 6 students in an exam;in two different subjects starting at the same time.Each teacher intetviews for 15 minutes;find the number of ways in which the interviews can be scheduled?
Since two teachers are interviewing 6 students, each student can be asked question on any of the two subjects
number of ways in which a student can be asked questions = 2
number of ways in which two teachers ask question from 6 students= 6C2=15
therefore total number of ways of taking interviews= 2*15=30
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