Free Practice Question
PS · Problem Solving
705-805
Combinations
A tech conference schedules 6 speakers, including Alex, Bruno, Carla, and Denise, to give presentations in 6 different time slots, one speaker per slot. If Alex must speak earlier than Bruno, Bruno earlier than Carla, and Carla earlier than Denise, in how many different ways can the 6 speakers be scheduled?
Answer Choices
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6
B
12
C
24
D
30
E
120
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Explanation
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Difficulty
705-805
Type
PS
Category